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The IBM Personal Computer running DOS 1.0

Manufacturer International Business Machines Corporation
Model 5150 (IBM PC)
Date Announced 1981
Date Canceled 1987
Number Produced Hundreds of thousands+
Country of Origin USA
Price Approximately $1,600 base
Current Value $50-$500
Processor Intel 8088
Speed 4.77 MHz
RAM 16K-640K
ROM Unknown
Storage Cassette Tape, optionally 5.25" floppy drives, hard disks
Expansion 5 expansion slots
Bus Industry Standard Architecture (ISA)
Video Initially CGA (320x200x16 color, 640x200x2 color) or monochrome (80x25 text only))
I/O Parallel, Serial
OS Options PC-DOS (MS-DOS), CP/M-86
Notes The IBM PC was introduced in 1981 to much fanfare in the computer industry. IBM, being the biggest computer company of all time to that point, helped legitimize the PC revolution by participating in it.
Related Items in Collection Tons of manuals, software, magazines, DOS 1.0, CP/M-86, other PC compatibles including Compaq Portable,IBM PC AT and IBM PC Convertible.
Related Items Wanted IBM PC XT, IBM PCjr, additional software.

The IBM Personal Computer

IBM introduced its Personal Computer to much fanfare on August 12th, 1981. The PC was developed in an astoundingly short time (under 1 year) by a "skunkworks" project at IBM's Boca Raton Florida facility.

One significant reason for the rapid development cycle was the use of "off the shelf" parts for things like disk drives, processors, memory and the like.

Another "off the shelf" component used on the PC was IBM's Operating System software - PC DOS. This product was licensed from Microsoft after the IBM development team were unable to secure a license for CP/M. The use of Microsoft's product on this machine helped catapult an already successful company into its current dominant position.

The PC pictured here is one of two in my collection. This is an original PC variant with a 64K motherboard (as opposed to the later 256K motherboards) and version 1.0 ROMs. It normally has a color graphics adaptor (CGA) and an IBM 5153 Color Monitor as well as a multi-function card and some other accessories although the Monochrome monitor (IBM 5151) and IBM Monochrome/Printer Adapter card are probably more correct for the machine. The system has a full suite of original IBM documentation including the 1.0 versions of DOS, BASIC and the IBM PC Guide to Operations.

Microsoft Adventure

I have lots of original software from IBM and other sources including CP/M-86, VisiCalc, PFS:Write and much of the original IBM library of games and educational software including the BASIC Primer, Typing Tutor, Adventure and the "Microsoft Decathlon."

Lots of Microsoft Docs

I also have the IBM PC Technical Reference and IBM PC Maintenance and Service manuals.

The other PC in my collection is a later model with a Monochrome card and an IBM 5151 Monochrome monitor.

IBM PC manuals

Both of my PCs have all of their original manuals, as shown here. The three manuals to the right are all 1.0 versions, including DOS 1.0 with the original DOS disk.

IBM PC Keyboard

The IBM PC Keyboard was a very sturdy, well designed 83 key model that had far better key placement and a better feel than any other low-cost computer of its day. IBM did everything they could to sell the ideas of "professional" and "sturdy" with their machines and they succeeded without question. Even the function keys were a hit!

IBM 5.25 inch floppy drive

IBM made the PC with as many off-the-shelf parts as possible. That didn't stop them from stamping them with their name and logo, though. This is a standard Tandon 5.25" disk drive except for that IBM logo.

The reciept for my first computer, purchased by my Dad

IBM sold the original PCs for around $1,600, but that was just an advertising price for the 16K system unit with a keyboard. Once you added a video adapter, some RAM and a disk drive or two you could easily climb to double that price. My first PC was purchased by my father and cost nearly $2,800. It had a single disk drive and 64K of RAM with a CGA card to be hooked into my TV set. I eventually got a black and white composite monitor so I could see 80 columns and a Quadram Quadboard that allowed me to expand the PC to nearer its 544K limit.

Front of the IBM Fact Sheet
Back of the IBM Fact Sheet

IBM did an all-out media blitz with the introduction of the PC. The card above is one of several I collected from local computer stores while waiting for my PC and it is one of the few advertising items that didn't feature Charlie Chaplin whose visage IBM licensed to represent their machine.

DOS 1.0 disk label

Perhaps my favorite aspect of this original IBM PC is the fact that I still have my DOS 1.0 manual and disk with it.

DOS 1.0 Running

DOS 1 was such a crude and simple operating system as compared to later versions or even CP/M. It was, however, easy to learn and starting from 1.0 meant that I only needed to learn a bit of new stuff with each iteration.

DOS 1.0 did have a nasty math bug, though, that was fixed by a patch - version 1.05. I've got a copy of that as well. IBM never officially released that version, however. It was just a bridge version until 1.10 could be shipped with the fix and some new features.

DOS 1.0 Booting close up

On boot DOS would ask for the date and then drop you to an A> prompt. There was no colon and there was no C> because the original PC wouldn't support hard drives or sub directories.

The PC also didn't have any sort of BIOS configuration utility. The system was configured by setting up a couple of sets of dip switches on the motherboard. One switch indicated whether you had a monochrome or color card installed. The one next to it indicated the default video mode (40 or 80 column.) Others set memory size.

As compared to today's multi-gigahertz, multi-gigabyte machines the original PC is crude and primitive.

But with its introduction in August of 1981 the world of personal computers was forever changed. The PC effectively killed CP/M and the S-100 bus and many of the companies that supported them, although those technologies clearly lived on for quite a while past 1981. Microsoft's shrewd decisions with regards to the DOS licensing agreement allowed them to sell DOS to other companies who produced PC clones. With every PC went DOS and with every copy of DOS Microsoft's dominance grew.

With the PC Intel went from being just another player competing with Zilog and Motorola to being the undisputed king of PC processors for two decades and probably more. In fact, much of the technology from the original PC lives on today as legacy support in the latest Microsoft operating systems.

Even when that's no longer the case the PC will still stand in the PC hall of fame next to other influential and landscape-altering machines such as the MITS Altair 8800 and Apple Macintosh.

(Submitted May 8, 2012 19:38:34 by Bill)

I have the original IBM BIOS manual that contains the complete fully documented bios code. I bought this when I bought my IBM 5150 in 1983. It was quite the popular borrowed book when I was consulting at GM because many of the folks I worked with were writing MASM Assembler device drivers and telcom software. I still have my 5150 with upgrades from PC Limited (aka Dell), but am missing my color monitor which I lent to an ex brother-in-law and never got it back. Would love to find another monitor and boot up this baby! Regards from San Diego.

(Submitted May 3, 2012 15:03:06 by Thomas)

Because of this site, I have just finished restoring a perfect IBM 5150 computer system complete with original IBM 5161 expansion unit IBM 5152 Graphics Printer and IBM 5153 CGA 16 color display and graphics adapter. This system took a year to complete. Pics and stories can be found in the forums under the user ID of bettablue. Enjoy.

(Submitted April 9, 2012 10:31:04 by Jerry Swanson)

I have my brother's 5150 IBM PC serial number 5700671 purchased 10/19/81 and don't know what to do with it. What is the value of the computer with lots of software/manuals, disks, etc. Please email me any suggestions that you may have.

(Submitted March 17, 2012 01:20:05 by Jimmy)

I am interested in purchasing a copy of PC Dos version 1.0 as well as CP/m-86 version 1.0 or the IBM OC

(Submitted March 13, 2012 04:17:15 by tuinui)

I have old book (IBM Basic,IBM Giude to Operations Personal Computer XT,IBM Disk Operating System and IBM Disk Operationg System).if Who interesting my old book please contract :

(Submitted January 12, 2012 15:21:45 by Don Smith)

I still have my XT computer, keyboard and tons of software that I bought new. However, I do not have my monochrome monitor. Is there a way I can boot up the computer using another monitor?

(Submitted December 19, 2011 17:13:03 by isa)

I wonder if anybody knows the name of a game that i think must have come with an old ibm from the 1980's, - it was kind of like a maze, you had to jump from one ledge to the next and over things that were out to get you... as you went along it got more difficult and faster,,, and there were different levels... it was totally analog, no video, just the green characters... I was very young and cant remember the name...

(Submitted November 29, 2011 15:44:55 by (a Ranger(/a))

I'm getting ready to clean out a storage shed where I stashed a fair amount of old computer crap after I closed a store in the late 90's. Would be interested in moving everything in one load. Serious inquiries only please.

Off the top of my head, I know I have a functioning Compaq suitcase, IBM portable, Princeton Graphics mono/cga/vga monitor, an original 16 Kb PC motherboard, boxes of 8 & 16 bit cards....

(Submitted September 12, 2011 01:59:27 by Shikhin Sethi)

IBM Personal System/2 Mouse Technical Reference, (2nd ed., Jun. 1989, IBM Corporation)

Hi Sir,

Considering your contributions in the field, I was wondering whether you hold a copy of IBM Personal System/2 Mouse Technical Reference, (2nd ed., Jun. 1989, IBM Corporation). I'm willing to give as much as $300 to obtain a copy of the same. Perhaps you could help?

Regards, Shikhin

(Submitted September 7, 2011 13:04:38 by Matthew)

I have a IBM5150 with monitor and keyboard and a dotmatrix fx-80 in the Maryland area, taking best offers. contact with inquiries and questions


(Submitted September 3, 2011 04:17:13 by Felix)

Hi I am looking for an IBM PC, in WA, Australia. If anyone has one, a clone, compatible or anything older than 20 years please contact me. Thanks

(Submitted August 15, 2011 13:50:33 by John Cibulskis)

I have the following: Disks: Diagnostics V. 2.02 Diagnostics V. 2.05 DOS (can't read the version number) DOS Supplemental Programs (2.10) MS Macro Assembler (016014.40) Hercules (1983) IBM Exploring the IBM Personal Computer V. 1.0 AST SuperPak Utility Programs V. 5.10 and a couple others IBM Manuals: DOS Version 2.10 DOS Technical Reference BASIC 3.0 Guide to Operations Personal Computer Technical Reference Personal Computer

Are any of these worth anything or should I just throw them into the recycling bin. Thanks, John

(Submitted July 9, 2011 00:02:26 by Alan)

Hi, Im looking for an IBM Macro Assembler 1.0 and 2.0 manual, Im interested in buying them.

(Submitted June 22, 2011 11:14:53 by Don Grimm)

I have working PC Junior with manuals and games etc. Anyone interested?

(Submitted June 12, 2011 23:24:30 by Scott)

I have a 5150 with keyboard and 2 of the books. Even a spare hercules graphics card. In south florida area. Taking any reasonable offer.

(Submitted May 28, 2011 23:15:17 by (a href=mailto:wilson)Wilson(/a))

Do somebody need the orginal IBM Basic manual ? I have one.

(Submitted May 7, 2011 15:30:53 by Quentin)

Can anyone tell me how to determine the amount of memory on an original memory expansion card?

(Submitted April 22, 2011 11:21:55 by Janos)

Hi, I am looking to buy an IBM 5150, please email me if you have one, many thanks, Janos

(Submitted April 15, 2011 08:34:47 by JVB)

Checkout VINTAGE IBM on EBAY for lots of software and original IBM manuals...

(Submitted March 19, 2011 21:07:14 by al)

I was cleaning out my garage today and found a IBM Personal Computer, including unit, color monitor, and keyboard. I believe its a 5150. It's been used and I don't know if it still works. If anyones interested in buying it I can try booting it up. Email and send offer.

(Submitted March 5, 2011 12:17:09 by Dario Alves)

Hi, He liked to have an IBM PC 5150. Does anyone know where I can buy a complete (CPU, monitor, keyboard)?. Thanks

(Submitted December 12, 2010 11:28:55 by Andy)

Hi! I have a NEW (!!!) PC IBM XT for sell! The computer was NEVER used and it is boxed in the original IBM-Cover! It may be, that this PC is the only one of this computers as a NEW one worldwide! If you are interested, please mail me.

(Submitted December 10, 2010 00:38:56 by Betty)

Found in basement Disk Operating System Version 3.00 book in case plus 2 5 1/4 floppy disks; DOS Programing Family Version 3.0 Supplemental Programs and DOS. Are these useful to someone?

(Submitted November 4, 2010 22:23:55 by (a href=mailto:tomoso-dot-ukATgmail-DOT-com)Tom(/a))

Hi all, I don't know if anyone would be interested but I have a UK built 5150 for sale on eBay with no reserve item 180583408422. I will ship world wide and have lots of photos up

(a href=¤t=46db15e0.jpg target=_blank)(img src= border=0 alt=Photobucket)(/a)

(Submitted November 2, 2010 15:30:49 by Harald)

The PC1 with 5pin connector for cassette-recorder was my 1st machine where I tested Basic programming. Great system!!

Im looking for documentation (wiring diagram) to repair a defective power-supply from 5150. Who can help me with a digital copy (PDF).

(Submitted October 25, 2010 10:18:09 by Al)

I also saved all the original manuals and disks (DOS 1.0) from the first IBM PC I purchased new when it first came out. Is there a market for these items and if so, are they worth much?

(Submitted October 16, 2010 20:32:54 by Mike)

Hi, I have an older version of 5150 completee with 5151 monitor and keyboard. Somewhat unusual that it still has an original I8088 cpu 1976 with interrupt bug , never uppgraded, has one IBM marked drive. Would be interested how much is it worth right now?

(Submitted September 27, 2010 00:36:39 by Vic)

I have an IBM XT, with color monitor, and keyboard, all in their ORIGINAL IBM boxes available for sale if anybody is interested. Other goodies include manuals, printer, and floppy discs.

(Submitted July 28, 2010 13:31:16 by peggaty)

If anyone is interested, I have 3 IBM manuals in very good conditon they include original floppy discs that came with them. IBM 3.0 Basic (3rd edition 1984), Guide to Operations Personal Computer (1984) and XyWrite III (1985).

(Submitted June 16, 2010 19:35:11 by JP Valeros)

I have the IBM 5150 w/ monochromatic monitor, keyboard, printer, original books, floppy disks, and even games. How much is all this worth?

(Submitted May 25, 2010 00:02:09 by Ryan)

I'm looking to buy an original 1981 model of IBM PC 5150 with 1981 manual set. It must have the black power supply, original ROM chip, monochrome IBM monitor, dual floppy drives (the original 160K), and confirmed working. Click my name to email me.

(Submitted May 17, 2010 23:55:48 by NAVEEN)

Ah! that also i was born three years before IBM introduced its Personal Computer to much fanfare on August 12th, 1981 , i.e; i was born on same date 1978 in fact i am a mainframe programmer too... Nice Good Feeling

(Submitted February 17, 2010 17:21:05 by David Bielen)

I am looking to purchase any original IBM reference manuals or software, Mainly I am after CP/M-86, Pascal, the 2 Hardware reference manuals and the BASIC If you have any of these I would be very interested :)

(Submitted February 14, 2010 00:18:44 by Rose)

I have the original PC (purchased in '85) with the color monitor, printer, and all the original software (including PASCAL still in the wrapping). It is the 256K version system with dual floppies. I also bought Flight Simulator for this PC which was very popular back then. Still runs! Anyone with questions or offers feel free to email.

(Submitted December 6, 2009 18:06:04 by Paul)

I too have a complete original IBM PC system, complete with pristine reference guides and software(including CP/M). Any idea what it is worth?

(Submitted November 20, 2009 21:29:51 by william hahn)

if anyone has an mek6800d2 for sale please email me and let me know

(Submitted September 22, 2009 20:13:01 by ben)

I have an complete system. All working. It is for sell, make an offer

(Submitted August 13, 2009 15:26:46 by Lee Elliott)

I have a 1981 IBM Technical Reference Manual and A 1981 Macro Assembler Manual. Anyone interested?

(Submitted August 11, 2009 05:15:52 by saida)

Kindly, any one can send this computer schematics

(Submitted August 7, 2009 11:37:01 by Matthew)

Ahh, I wish i had a collection like yours...

(Submitted August 5, 2009 21:28:29 by dustin mollett)

I know a guy in town that owns a retail shop. He had a radio that had a burnt tube, so I offered to trade him one for something in the shop. He said he had an old computer in the garage so I traded it for that. I didn't see the computer until after the trade so I didn't know what to expect, as it turned out it wasn't just the IBM 5150 it was the printer, monitor, keyboard, and another printer. Unfortunately it's having trouble booting up.

(Submitted July 9, 2009 12:10:04 by JeremysArt)

I have a nice collection of Vintage PCs and gaming systems, I had an IBM 5150, but my mom threw it away when I was around 5th grade.. Anyone looking to sell one with a monitor & key board should email me.

(Submitted June 22, 2009 15:53:30 by Eric Wooldridge)

I would like to know where I can buy a copy of the IBM MS Adventure that is still in working order and if possible available in 3.5 floopy or CD so I can play it now.

(Submitted June 6, 2009 14:42:34 by Patrick)

It's interesting to note that even the version 1 manual of microsoft dos refers to it as ver 1.00 i.e two trailing zero's. Bill knew even then how buggy it was and that it was going to need seriously revising he's been playing the same game ever since. Where I worked, A consumer electronics manufacturer, I had unrestricted access to one of the xt machines all those years ago, took it apart and put it back together many times, read all the manuals cover to cover, If only I'd realised then that I knew far more about PC's than almost anyone around.

(Submitted May 23, 2009 12:38:33 by Stephan)

Thanks for the correction on the receipt- I should have guessed 1/2/81 was a slip-up due to the New Year's festivities. I also found out that the Osborne 1 was ready for sale before the IBM-PC, in April/May of 1981 (in time for the National Computer Conference in May, 1981). That model was officially the first laptop ever, but as you know the screen was almost like the modern day Ipod in size! Talking about archives :-), I just ran into a fascinating interview on a show called Computer Chronicles hosted by Stewart Cheifet and Gary Kildall (of DR fame): ~~ ~~ In this episode we see Gary Kildall, Digital Research; Steve Wozniak, Apple; Adam Osborne, Osborne Computer; Lori Harp, Vector Graphic; Gene Amdahl, Trilogy Systems. I really enjoyed watching Computer Chronicles on PBS in the 90's, and found Stewart Cheifet to be a most entertaining and affable host (1981-2002).

(Submitted May 23, 2009 10:51:52 by Erik Klein)

The Aug. 12, 1981 date was very well publicized.

The 1/2/81 date on the receipt was just a typical New Year's hangover where the clerk forgot to change the year.

The actual purchase date was 1/2/82 although it was ordered months prior to that.

(Submitted May 23, 2009 09:59:42 by Stephan)

Erik: I have been puzzling over the actual date that the IBM-PC was first introduced. I have seen in a couple of places, the date April 24, 1981. is one of those. Your receipt pictured above for your First Computer- purchased by your father- shows the date 1/2/1981, but that computer was probably not officially an IBM-PC, but a customized version with some IBM parts. Then there is the date Aug. 12, 1981, familiar to us all. I suppose there will never be agreement as to the actual First-Release date, since it depends on who you ask! Maybe 4.24 was like a sneak preview for 8.12, at one of those computer conventions. They are related after all, since *8*=*4*x2 and *24*=*12*x2. Who knows what the marketing gurus had in mind?

(Submitted May 11, 2009 18:00:43 by jak)

So many wonderful memories with this machine. Thanks for the awesome pics and details. I grew up on one of these machines. I really miss it.

(Submitted April 24, 2009 09:36:53 by (a href=mailto:)Mortar(/a))

It would've been interesting to see what would've happened if IBM had been able to license CP/M. I loved that OS.

(Submitted April 8, 2009 07:36:59 by troy barnes)

is any of this stuff for sale?

(Submitted January 29, 2009 08:09:19 by (a href=mailto:)stan (/a))

Hi does anyone have a copy of DOS 1.0 to DOS 2.0 on 5 1/4 floppy? I need it to boot my IBM 5150

(Submitted November 17, 2008 10:04:10 by Brandon)

It seems that alot of people don't realize that you can take a 16bit ISA card and put it in a an 8 bit slot and it will work in 8 bit mode. I'm sure there some loss of throughput and maybe some functionality works! I did this with my first PX-XT when I added a $600 VGA monitor! I now have a beautiful 5150 system I had put away many years ago when I friend gave it to me for helping him build a new turbo 286 clone! and I just broke it out and set it up. I am offering it for sale on eBay. It is item#250326445257. It can also be viewed @ Cheers!

(Submitted October 21, 2008 05:38:32 by joash)

There are some odds and end items for the IBM PC/AT system, Hardware/Software/Documentation/etc, let us know what you are looking for and we try to find them for you. Thanks

(Submitted October 14, 2008 07:16:48 by Csr Palace)

I remember using this PC. If I am not mistaken, I used a small version of BASIC programming language to write some programs for it. This is an excellent site. Good job...!

(Submitted July 24, 2008 09:27:59 by gerry doire)

I recently aquired 4 8-bit VGA cards. 3 of them worked perfectly in the IBM 5150.

I connected a Vintage IBM VGA Monitor to it and everything looked great.

The 5150 is a 1983 version, it currently has a 20 gig hd on a card, vga card, a floppy card that supports 1.44 with the latest dos, the ast 640 card, and the original 8bit Sound Blaster Card.


(Submitted May 18, 2008 02:22:33 by Mohamed Asif)

I am having a problem with my CPU (M/T 8/75-LA6 ), sound and vga. pleas let me know whether there is any down load available according this problem

(Submitted May 7, 2008 22:58:36 by gerry doire)

Looking for a VGA card or EGA card that can connect to a Nec Multisync 3D Monitor or VGA Monitor with a 15 pin. For use in a IBM 5150 8 Bit Slot.


(Submitted March 8, 2008 09:00:03 by Gary)

I've an old 5150 which had spent the past few years up the loft in a box. I recently decided to put it back in use, but found it to be quite dead. The power supply is fine, but the motherboard seems to have given up. Does anyone know of anywhere, preferably in the UK, where I can find parts for this great computer?

(Submitted February 12, 2008 07:57:01 by (a href=mailto:)Red(/a))

On a philosophical note, I would dare say the green monochrome display is so ingrained in our collective (sub)consciousness that it has become the defacto symbol of the cyber-culture as represented by the Matrix' movies.

(Submitted February 1, 2008 22:24:07 by Jim Johnson)

I have a 5150 ibm with all the goodies that was sold at the time however i do not have any of the original software. I am in hope of locating a complete set so i can phase this machine back into service again. I like to just toy with it for the sake of staying up to date with the old school techno. if anyone is interested in selling their old software please e mail me at by the way i love this website its nice to know i am not the only ibm junkie around i have the comple collection from the 5150 on up to the p3 systems my 300pl is a workhorse. thanks jim

(Submitted November 14, 2007 00:29:00 by Jenny)

What I would like to know is can I boot up my IBM PC model 25 Type 8525 with the new software or programms or use any new component on it ex.keyboard and mouse. Thaks

(Submitted October 30, 2007 11:04:41 by Justin Gale)

I have a clone of one of these made by a company called LanPar. It had a 20MB MFM HDD, 2 800k halfhigh 3.5 floppies and 640k of ram with the 8088N i think. I can send you some pictures if you like.

(Submitted October 26, 2007 09:48:14 by Douglas)

i think the green monchrome monitors look great. im not sure if this is a stupid question, but would a monitor such as the 5151 work with a recent pc (running a recent version of dos or other command line interface). thanks

(Submitted October 20, 2007 13:23:39 by Ross Heflin)

I also have this original 1981 system, probably a large volume of the documentation as well... 640k ram, I just don't have the ability to care for the beast any longer and am seeking a good home for it... anyone willing to pay for shipping can have it.. feel free to contact me

(Submitted October 14, 2007 15:18:41 by Chris)

I have a 128kb IBM PC Jr, and a Jr Mate. I am considering selling it, does anyone know about how much it is worth today?

(Submitted October 3, 2007 22:38:40 by Raffi Kiraz)

This is so Cool, i wish i can boot this one up... wonder how long it will take! LOL cool PC.

(Submitted September 25, 2007 10:36:20 by eric carlen)

we have a 1980 IBM PC with all of the manuals

(Submitted September 13, 2007 12:46:18 by andrew)

Hi! I have this machine and would like some advice on how much it is worth st todays prices? 13.09.2007 Thank you.Andrew

(Submitted September 9, 2007 19:30:00 by Aaron Moody)

I have a bunch of parts. I have pics here on my friends site (temporary location) until I get my SSH FTP password problem resolved for my own site. I have software too. I was going to fix my old 5150 to tinker with but thinking of selling everything. I just don't have the spare time like I used to. :-(


(Submitted September 10, 2007 06:32:23 by (a

Great article! I have one question though that I can't find the answer to. Does anybody know when IBM stopped supporting it?

I'm writing a history article and this and other old technology support dates are of interest to me but very hard to come by. Also if you know when major companies closed support to some machines like Macintosh 128k, etc. please, drop me an e-mail.

(Submitted September 1, 2007 04:56:20 by Aaron)

I notice above you mention this,

Quadram Quadboard that allowed me to expand the PC to nearer its 544K limit.

actually, if you had the 6 pack + it would let you upgrade it to 640k ram and a 20MB hard drive.

(Submitted August 26, 2007 14:41:15 by (a href=mailto:)eugen_r2(/a))

Hi there,

I need the manuals which came with versions 1 and 2 of MS-DOS. If somebody has these documents scanned and does want to share them, please let me know.


(Submitted August 12, 2007 17:18:23 by Pradeep)

i am looking for the hard drive for IBM PC5150. requiredfor the laboratory system which requires watsmart motion analysis system. any one has it please help.

(Submitted June 29, 2007 13:44:10 by chris)

I have an original IBM PC, father worked for IBM, was one of the first off of the production line. Monitor, keyboard, and PC Unit.

Let me know what this may be worth please...I am in the Silicon Valley area...If you can pick it up I will knock off a huge chunk from the current market for these vintage PC's.

Everything works...

(Submitted June 2, 2007 11:48:21 by Mr Davis)

I am a IT Instructor and we have many legacy parts for just about everything, we are willing to sell or trade so that maybe the students can bring some of these systems back from the dead. We like to revive these legacy systems and then donate them to folks that cannot afford to buy much more expensive systems.

(Submitted May 18, 2007 15:19:26 by Emil)

I have an IPM PC that I purchase and am looking to sell. I removed one ot the floppy drives and replaced it with a 10MB hard drive. Still works great. Plenty of software loaded including Lotus 123 and Wordperfect. Configuration is as follows:

IBM PC with 1 floppy and 10MB hd Color Monitor AST 6 pack to increase memory tp 640k and graphics card. Keyboard All original documentation.

Please advise how much you will be willing to spend.

Thank you. Emil

(Submitted May 12, 2007 17:02:48 by (a Cooper(/a))

I have genuine IBM Industrial Computer Technical Reference manuals vols 1, 2 and 3. Gives logic and BIOS lsitings of CGA, EGA and other PC expansion cards, diskettes and 10 and 20 Meg hard drives.

Heavy in good IBM binders, offers? These are gold dust!

(Submitted April 13, 2007 13:45:34 by Eugene)

I have the same PC but generic QUADCHROME monitor. It was working fine but when I tried it the other day it doesnt boot up. I think is the power supply. where can I get a replacement power supply??


(Submitted April 11, 2007 20:51:21 by Doug)

I bought my first IBM pc in 1981. It cost $6,000! It had a 20MB hard drive which was built by someone other than IBM. It had a uni- directional Epson printer (MX-100), a monochrome monitor. I found some company in Boise, Idaho that sold me an indexing system for BASIC, since IBM's BASIC had no way to directly access a file other than by record #.

The DOS language had a quirk. When you keyed the FORMAT command, if you forgot to key the drive letter (A: or B:), the darn thing would default to C: which was of course the hard drive. Did that a couple times before I stopped making that mistake.

I programmed it at my office. I was taking it to the customer so I carried it out to my car, lost my grip and dropped it on my foot. It broke my big toe.

(Submitted March 27, 2007 12:23:39 by Jim Johnson)

looking for older pentium and back cpus complete not for collecting but for project regarding functionality of older systems esspecially ibms. I have operinional 486, p1,p2,p3 systems by ibm all running w all original parts. I am willing to pay for shipping on parts if no complete systems in your possesion note must be ibm type fru nums on parts. thx j0768

(Submitted March 15, 2007 08:04:01 by Sergey Dobryak)


I finding IBM PC DOS 1.00 and MS-DOS 1.00 Help me please!!! :( Send me original boot disk 1st DOS version!

See yahhh!

(Submitted March 9, 2007 21:55:52 by macneal)

I have this computer and I would like to sell it. I will sell it for a cheap price, it hasn't been used much at all. Please contact me thru e- mail-

(Submitted March 9, 2007 05:05:36 by Steven)

I don't supose anyone knows what the pin connections are for this screen??

(Submitted March 5, 2007 06:58:45 by regina)

i dont know what to say about the computer that was created years ago but the computers have changed a great deal!

(Submitted February 16, 2007 23:25:02 by 5150)

5150 and all which using 8bit bus, can use 8-bit VGA card. and dont be worry if you can't find any of those CGA or Hercules.

(Submitted February 16, 2007 23:08:20 by 5150)

I'm looking for schematics for IBM PC 5150, if any body has it or willing to scan for me I would like to compensate it fairly.

Thank you in advance

(Submitted February 7, 2007 16:28:01 by CODY GREEK)


(Submitted January 29, 2007 14:43:39 by Eric)

Erik: Great site - Please let me know if anyone is interested in a complete, all original IBM PC Model 5150 in the early 16K RAM-on-motherboard configuration with all the original/correct period cartons, receipts, IBM components/accessories including keyboard, CGA card, color monitor, floppy drive controller, full set of manuals/user guides in slip covers (including MSDOS 1.0, Tech Ref Manual, etc) - Still works perfectly! I bought this used in 1983 and am the second is like NOS condition - It came with one Tandem floppy drive and I bought a second one from some kid in Austin, TX dorm room named Dell...he helped me install it over the phone! I am interested in selling complete PC package including later additions of expansion memory board (Tekmar) & RAM, Seagate 10 MB drive & controller, Hayes-type modem and tons more proto- nerd hardware, software, discs and manuals. Email adddy above - Thx! Eric

(Submitted December 22, 2006 00:31:02 by David)

Do you know any website that gives for download the *.pdf files for the books you just showed in the pictures?

(Submitted December 21, 2006 10:18:02 by Nick)

Oh man, that is so cool...I wish I was alive back then. :(

(Submitted December 19, 2006 23:25:06 by (a href=mailto:)Robert Dvoracek(/a))

The 'i' in Macintosh isn't capitalized.

It'd be cool if you had a Macintosh 128k page but they're expensive little buggers. If you do get one, I can offer some assistance with disassembly. They're easy to damage and have high voltage inside. Contact me through my website

(Submitted December 13, 2006 12:33:39 by Joe G)

Does anyone know of any vendors who sell the classic XT/AT cases modified for ATX Motherboards. I always liked the classic look of the XT/AT Cases. If so let me know or post the URL.

Thanks, Joe

(Submitted December 8, 2006 03:13:01 by herauthon)

Still have one 5160 - with those Tandon fullsize 5.25 drives - and boxes filled with floppycontrollers, vga(isa) and ibm memory exp card, and lots lots more..

(Submitted December 2, 2006 20:05:20 by orenkogi)

hellow i am from israel and i want to buy old computer ibm pc with dos.......i wanted to know if you have a store selling in europe or usa to buy this computers............

(Submitted November 25, 2006 05:21:13 by valentine)

Hello! very nice web site. I have a pc-dos ver 1.1 it looks just like ver 1.0. does anybody have pc-dos 1.0? where I can download it?

(Submitted October 15, 2006 07:55:10 by Debra Franklin)

I have an original IBM 5150 with keyboard and the 5151 monitor. I am located in Connecticut. Ideally, it would be great if someone wants them who could pick them up but can consider shipping if necessary. Haven't decided on a price, wanted to see if worth much first though would make it certainly reasonable if much at all.

(Submitted October 8, 2006 09:35:43 by Fran)

I have up in my attic a hardly used original IBM PCjr that I bought for my son when he was about 13 years old. He's now 39 years old, so that would make it about 25-26 years old. I don't know a lot about computers (Rams, etc.), but I know that I have the original documentation somewhere. Is it worth my while to find the documetation? How much would this computer be worth today? Thanks. Mrs. D.

(Submitted October 7, 2006 21:57:24 by Rick)

I am looking for a Monitor Black & White for my IBMXT that I purchased in 1986

(Submitted August 31, 2006 04:37:28 by SHARAD AGRAWAL)

i would like to received some mails about new configuration of computers which facility is company given to coustmers

(Submitted August 28, 2006 07:53:31 by Greg)

Hey Erik,

Any chance of putting the DOS 1.0 dsk image up on your site or emailing it to me? I'm sure IBM'd be OK with the copyright side of it given that (a) They sold their PC division to China last year (b) It has no commercial value or application (c) They would have dropped support for it an eon ago.

You can get all the tools to do the imaging (plus many many old IBM booter images at:)

Thanks mate, Greg.

(Submitted August 28, 2006 07:44:04 by Greg)

That's interesting to see CP/M-86 in an IBM slipcase. I always thought DR marketed it themselves. Boy DR were dumb... if they had priced it lower than DOS then end-of-story but apparently it was worth like $500 compared to about $50 for DOS and DOS was so much more underpowered (I have used CP/M-86 on my 5150 and it's a real step up from DOS 1.x-2.x).

Anyone got a 5161 or 5152 they want to sell cheap?

(Submitted August 23, 2006 10:25:52 by Gary)

Several of us are desparate for replacement cables for the 5161 IBM Expansion Unit. Can anyone help with technical information, pinouts, schematics for the extender/receiver cards????

(Submitted August 17, 2006 17:47:48 by psikeyhackr)

[quote](Submitted August 12, 2006 14:52:18 by Ron Mitchell)

Here's a tid bit on the 25th Anniversy of the IBM PC... IBM used the Intel 8080 micro processor instead of the Intel 8086 micro processor because of the IBM System 32. IBM used the Intel 8086 in the System 32 and was afraid that if the Intel 8086 was used in the IBM PC that some interprising soul would figure out how to get the System 32 OS to run on the PC and thus cause a loss of sales for the System the end, some one figured out how without IBM's help...:)[/quote]

This is total BS. I was a Customer Engineer for IBM and trained on the System 32. It was introduced before the 8086 was available. It was an 8 bit processor machine derived from System 3's and the 8086 would blow it away.


(Submitted August 17, 2006 01:10:38 by David)

Cool site!

Two years ago while moving I thought I wouldn't ever be interested in continuing my computer collection NOR did I think that any of my STUFF would be worth anything to anybody. So I THREW AWAY two complete IBM 5150 PCs with monitors and double floppies, plus other stuff.... AACk!

(Submitted August 13, 2006 22:26:07 by Erik Klein)

Re: The date doesn't add up on the invoice. It is for 1/2/81. The IBM PC didn't come out until 8/12/81.

You're right. The date only adds up once you realize that a lot of folks have trouble remembering the change in year right after the new year. On January 2nd many folks are still a bit hung-over. The machine was actually picked up on 1/2/82 even though it was ordered months earlier.

(Submitted August 13, 2006 22:03:51 by CarlSpackler)

The date doesn't add up on the invoice. It is for 1/2/81. The IBM PC didn't come out until 8/12/81.

(Submitted August 13, 2006 14:00:56 by (a href=mailto:...)john(/a))

@Ron Mitchell - It was in an 8088, not an 8080. They used an 8088 because 8-bit components were cheaper and the 8088 had an 8-bit bus compared to the 16-bit bus of the 8086.

I don't know where you got your info.

(Submitted August 12, 2006 14:52:18 by Ron Mitchell)

Here's a tid bit on the 25th Anniversy of the IBM PC... IBM used the Intel 8080 micro processor instead of the Intel 8086 micro processor because of the IBM System 32. IBM used the Intel 8086 in the System 32 and was afraid that if the Intel 8086 was used in the IBM PC that some interprising soul would figure out how to get the System 32 OS to run on the PC and thus cause a loss of sales for the System the end, some one figured out how without IBM's help...:)

(Submitted August 12, 2006 02:47:13 by Jack Dulfer)

I do own an IBM 5150, 5151(screen) and keyboard. Also an IBM 5161 expansion unit with 2, 10MB harddrives.

What is failing is the cable connection the 2 IBM creations.

5161 has a 60 pin female connection in the rear, the 5150 has a 37 female connection.

can someone help me to specifications about how to connect the two?

(Submitted August 7, 2006 19:21:27 by Chris)

Sweet!!! Wondering where I could get a digital copy of the original IBM PC technical reference manual.

(Submitted July 21, 2006 05:51:07 by airjet1981)

I am looking for IBM 5150 and 5160/XT systems and parts in the UK. If you have anything, please do let me know!

(Submitted June 29, 2006 10:35:58 by Bill Mesibov)

I've still got my original (purchased 1982) IBM PC with the monochrome green monitor and two slots for 5 floppies. I learned to program in Basic and had a lot of fun with it. I've gotta believe that this baby will be worth quite a bit as the years go. What do you think?

(Submitted May 16, 2006 13:37:35 by Alex)

I'm thinking of purchasing one of these bad boys. The only problem is I can't find one with the original monitor and keyboard. Is anyone selling theirs with these items? Also, it needs to be in good condition since I'll be keeping it for my collection.

(Submitted May 5, 2006 02:58:13 by davies)

please,I am having a problem with my ibm computer.the problem is that,when i switch on the machine it appears on the screen,power on selftest please what should I do and what does it mean?hope to hear from you soon.

(Submitted May 3, 2006 14:38:07 by Garan)

I recently found what I think is a IBM clone and has a 8088 CPU in it. This is a GoldStar XT-4 and I've been unable to find any information on it at all. I have a large variety of software and extra's to go along with it. Any information would be appreciated. This is not a MSX GoldStar as far as I know and was made in Korea. Has a CGA Monocrome monitor. Base operating system is DOS with the main desktop Eight In One that boots as soon as the system is turned on. Has one 5 1/4 floppy drive. Has a internal hard drive, not sure about the size of the drive. Several programs including GW-Basic and a GoldStar monitor manual, I am missing the system manual. Also has a MS- Basic manual and a MS-DOS referance manual to go along with it. Apparently this PC was purchased on QVC and the PC was manufactured on date October 1989 according to the model information on the back. Also the serial numbers are 910003624. FCC #: BEJ9QKXT4. Made in Korea.

(Submitted March 30, 2006 19:42:15 by Ana)

please can you detail to me the hard drive capacity,type and make of printer/scanner/copier

(Submitted March 30, 2006 19:24:16 by Maama)

Sorry can you give an Extra peripheral devices of this type of computer

(Submitted March 20, 2006 12:17:35 by Dave)

I probobly have the manuals and dont know it ! I am curruntly trying to organize everything. Im going to take pics of most of the collection.I have 200 or more books etc...on old programs that I havent even got into yet...In the meantime...there are some rather poor pics at, I dont know how the cat (or my P4 got in there!!!! I will improve on the Pics,shortly.

(Submitted March 19, 2006 21:44:52 by Erik Klein)

The IBM PC and PC/XT would have come with a BASIC manual and a Guide to Operations, per the picture above. Almost all of them would have also had a DOS manual, although that was sold separately.

Your Eagle PC is a good machine to have. It was the first IBM PC clone to hit the market!

(Submitted March 19, 2006 21:09:55 by Dave)

Great Site.....I have a 5150 with a 5153 color monitor and a 5160 with a 5151 mono monitor,there both in running order.I am looking for original manuals and programs for these fine machines(?).I have quite a few other old computers as well...including a compaq portable(1982)a Eagle PC (19??)various other IBMs model 30(286),model 70(386) and a wierd PS2 model 25.these all run along with numerous 286,386 and 486 clones.I have about 30 other computers as well...some run some dont...gotta Radio Shack model 3 with some manuals.Nothing is for sale but would like to trade what I have for what you have If you have something I want,if I have anything anyone wants.....I have LOTS of spare parts(just ask my wife). I am currently taking pics of some it if anyone wants to look at anything.Even a list of what manuals came with the old IBMs would be usefull.Thanx

(Submitted February 25, 2006 17:08:01 by Bill Thoen)

I've got a First Edition IBM PC Technical Reference Manual I'm thinking of selling since the old PC is long gone and the manual is just taking up space on the shelf.

It's dated 1981 and the manual number is 6025005. It's in good condition with some wear around the page holes and some spots of dirt and slight scuffing on the outside cover. I've had it since 1983, but since I don't know much about hardware or Assembler, it's not been used.

If anyone wants it, make me an offer.

(Submitted February 13, 2006 12:40:52 by inuyasha44320)

Ahem... I have an Ibm pc xt with 640k an 85mb hd 5inch 1.44 and 3.5inch 1.44 floppies mine has a rca style video-out and db-9 cga connector as well as a 1500 baud hayes modem and a boat load of extras like the card for the mini-floppy retrofit with the monster connector i like to play centipede and montzumas revenge i also use this thing to dabble in assembly programming... my dad give it to me his cat thought an xt keyboard was a good place to take a leak... thus i constructed a new one using a ps/2 at / xt switchable keyboard i found on the side of the road... i rewired it with the old cord and it Works like a charm...

now what to do with the f11,f12,menu, and windows keys?... i just pryed them off and filled in the holes my keyboard im using right now is an Ibm kb-2953 It looks like a model m keyboard but without the ridges on the side... i will shut up now and let you keep reading...

(Submitted January 15, 2006 23:28:52 by Steven Kanagy)

I own one of these exact machines and its expansion unit, Please try to be sympatyhetic to me, mine were exposed to storm surge water from hurricai Katrina and I need replavcament or up grade partd for ythe cases. please help,SAK)

(Submitted January 4, 2006 17:46:05 by Aaron)

I have a complete 5150 for parts and lots of extra cards, graphics card, motherboard, memory expansion board, extra floppies and more. Just got it all from my father who cleaned his closet. The 5150 doesnt boot, the power supply turns on but that's it. I have to take a look and see what is wrong. Probably something simple. But all the extra parts are in mint condition. Willing to sell all or parts for cheap. E-mail me if you want more details and pics.

(Submitted December 27, 2005 13:22:15 by David)

Hi, I have a TriGem 88E XT computer. The hard drive 20meg has decided to pack up, so I dont know if the card has gone west as well? I wondered if there as anywhere I could try to get a replacement drive and or card...I would prefer if this is possible to get a card that would allow me to use IDE drives as I have a 50 meg drive to hand. I've looked at loads of web sites but so far havent found any mention of the TriGem XT computer. Tried search engines etc to no avail. I should mention that I am in the Cornwall,England, UK to be precise. Thanks...

(Submitted December 18, 2005 09:11:50 by Andy)

I recently discovered two IBM XT computers with monitors while clearing out storage with a group I volunteer. Seem to be in good condition but not sure if they work yet. Will check next week. Single 5.25 drive. Dos 2.01 manual and Operating Manual in fair condition. Looking to sell for charity.

(Submitted December 10, 2005 12:03:48 by Ruben)

I'm looking for an IBM PC, anyone got one for me for a reasonable price?

Please contact me!

Thanks, Ruben

(Submitted December 7, 2005 14:01:11 by tara)

I am looking for a IBM 5151 monitor for the IBM 5150 machine. Do you know where I can purchase one at a reasonable price?

(Submitted November 20, 2005 12:01:29 by Tim Niles)

Can anyone tell me where I could get a copy of the BIOS listing that came in the original IBM PC technical manual (1981 or 1982)? I lost the BIOS listing 20 years ago, and it has irritated me ever since. I would either like to buy the technical manual or a copy of the BIOS listing or know where to find it on the web. Thanks.

(Submitted November 12, 2005 03:23:20 by Jacob)

I have one of this lying around. I remember the first day I saw this machine. It cost something like 10,000 Hong Kong Dollars when my old man picked it up. Brings back tons of memories, it is still sitting there in the spare room.

(Submitted November 4, 2005 11:46:56 by Mike Siskoff)

Hi All: This is my first post on here. I own an IBM 3270 Personal Computer, It was rusted very badly so I gutted it and painted it. I am now looking for an AT board for it that will support a P4 processor, anyone have any ideas? Thanks....Mike S.

(Submitted October 19, 2005 07:45:42 by Shannon )

I used to have one of those when I lived in my apartment in New York on the 5th floor and it was by a window and my husband scared me and the window was open and I hit the screen and it fell out the window down 5 stories and it was gone. That old thing had good memories and then they ended up getting swept away with the dump

(Submitted October 19, 2005 07:42:55 by hi)

this website is da bomb i come here all the time.

(Submitted October 4, 2005 11:21:30 by (a href=mailto:)t...(/a))

I agree - this box was already great fun - anf it made me wonder what would be 'next'..:) I can also say that I kind of grew up with it.. and it still runs at least MS-Flight Simulator.. which also has no GUI..:] And if you want to see some picture of it -) I finally uploaded some to my website (a href= target=_blank) ..hope that link works..? Otherwise I'm sorry..X]

..greetings, t..

(Submitted October 2, 2005 14:02:40 by (a href=mailto:)MK(/a))

Hello. I don't think you're the right person to ask this, but since you have this PC...I was wondering where I could find the monitor for the 5150? I'am desperately looking for it, but to (of course) no avail....hope you could be of some help...Thank you.

(Submitted September 19, 2005 11:17:07 by David Bielen)

Hi all, Erik this ones for you, since you have all the instruction books and original disk is there any chance that i could say, buy a copy from you? They don't need to be originals its just hell trying to find software of this age anywere, i am after pre 2.0 DOS and the diagnostic disk for an ibm 5150, and help is much appreciated, Thankyou, David

(Submitted May 14, 2005 17:38:05 by Adam)

Anyone care to guess what a working IBM 5161 Expansion Chassis might be worth? I have a complete unit with a 10M hard drive installed, sender and reciever cards, that ridiculously thick cable, and the manual taking up space in my basement I'm thinking of selling...

(Submitted May 10, 2005 16:59:55 by Griffin)

Sorry Interlace, but I have to kick you into touch with your above post (second from top)... the standard machine came with 64Kb on the mother board as standard, to extend the memory, you needed to either upgrade the memory chips or use a ram extension board (Quadram for example) As far as I remember, the standard shipped out mother board had 16 4KB memory modules on board, but absolutely did not have 640KB of memory modules as standard... no, you paid extra for those, along with your hard drive and your monitor.

(Submitted May 6, 2005 09:51:01 by David)

Oh! great computer. My 5150 is still working well EXCEPT it's hard drive. I've got to reinstall PC-DOS again, but I haven't found 5.25 disks. Anyway, someone selling them??? ;)

(Submitted May 3, 2005 10:53:56 by Interlace)

My dad had an 8088 XT (ibm) when i was little, with a monochrome adapter and a monochrome monitor that displayed orange (ahh.. nostalgia) :) I remembered using HGCIBM to emulate CGA for games (which was extremely cool hehe), i also believe that was the tool that could give a boost to ega adapters (mentioned a few posts above). Only one correction to what's mentioned above.... it had 640kb memory (so i don't think 512kb was the max back then). Oh well, those were the good old days.

(Submitted April 19, 2005 08:00:39 by (a href=mailto:)Paul Brannan(/a))

The 4-color limitation was only a limitation of the CGA memory. With 16K memory, it could do 2-bit color at 320x200 (320*200*2/8 == 16000) or 1-bit color at 640x200 (640*200*1/8 == 16000). These are the modes directly supporeted by the PC BIOS; with a little bit of manipulation of the CGA registers, though, one could achieve 4-bit color at lower resolutions. I don't remember the details, but I remember playing with some old code from Compute or BYTE magazine that did this; I was truly amazed.

(Submitted March 10, 2005 10:56:24 by Michelle)

i really like this page and i was just wondering if you could send me the recent upgrades to the IBM computers since 1975 when I think that was when it was first started.

Thank Michelle

(Submitted March 7, 2005 10:16:29 by Anthony)

Can you mount a 1.44mb or 1.2 meg drive in there and just configure them as 360 and 720 my 5 1/4's are no good anymore.

(Submitted January 25, 2005 01:20:37 by John )

I would like to ask, What is the Ethical Sides of the brining up of this Great PC at that time ??

(Submitted January 23, 2005 22:02:05 by (a href=mailto:)lk(/a))

Graphical User Interface. -like windows XP or just plain old windows itself. DOS is a non-gui

(Submitted December 6, 2004 22:38:49 by keef)

Bobby Arsfenstienger wrote:

But whats a GUI

GUI is a Graphical User Interface. That means interacting with a computer by doing something other than typing command line text strings.

Windows and Apple and OS/2 and many other operating systems are GUI. If you have to type things like C:/qbasic or edit in order to run programs, you're probably not running a GUI. If you are using a mouse, pulling icons around, etc, then you're using a GUI.

Here's a place that explains GUI in more detail:

I was surprised that a commenter in Dec of 2004 was eschewing Ebay because it would require a GUI. I presumed the comment was tongue-in-cheek, though I suppose it was not.

(Submitted December 3, 2004 09:49:55 by Rian)

We Have Same Hobby

(Submitted December 2, 2004 19:44:20 by Erik)


If you don't want to do eBay or the Vintage Computer Marketplace you can just accept emails from here and, hopefully, someone will want them.

You can also post something to one of the appropriate newsgroups. . .


(Submitted December 2, 2004 18:44:51 by Jeff)

I've got two 5150's in my garage...haven't had it in me to toss them (thinking they may be worth something someday...) Any idea how best to unload them (I'm not much for ebay...need a GUI for that)

(Submitted November 28, 2004 17:57:33 by Ron Avery)

There were differences between the early PC and the later XT. The PC had five slots, spaced further apart than usual, had two DIN connectors on the back (one for keyboard and one for cassette), and had a feeble 67 watt power supply. The later XT deleted the cassette port (though the BIOS continued support for it), at least a 120 watt power supply (IBMs I have seen used 120, 150 or 180 watt PSUs), an 8 slot motherboard. The PC could only support 64kB memory; the XT supported 256kB (512kB with special piggy-back memory). The PC had two sets of DIP switches and a relay for the cassette, the XT had one bank of DIP switches. The earliest PC's had a built in cassette with no floppy, like the Adam had...

(Submitted November 28, 2004 17:17:32 by Ron Avery)

There were differences between the early PC and the later XT. The PC had five slots, spaced further apart than usual, had two DIN connectors on the back (one for keyboard and one for cassette), and had a feeble 67 watt power supply. The later XT deleted the cassette port (though the BIOS continued support for it), at least a 120 watt power supply (IBMs I have seen used 120, 150 or 180 watt PSUs), an 8 slot motherboard. The PC could only support 64kB memory; the XT supported 256kB (512kB with special piggy-back memory). The PC had two sets of DIP switches and a relay for the cassette, the XT had one bank of DIP switches. The earliest PC's had a built in cassette with no floppy, like the Adam had...

(Submitted November 13, 2004 18:09:40 by Jim Maloney)

A GUI, Bobby, is a Graphic User Interface. I pulled an IBM PC out of a dumpster at New York City's World Trade Center back in the late 1980s/early 1990s and still have it. I actually mail ordered some additional RAM a while back and took it up to the full 640K. I used it as recently as 1997 but have not booted it in years.

(Submitted October 19, 2004 03:47:01 by (a href=mailto:)Mohsin Mansur(/a))

the CGA display supported only 4 colors @ 320x200

(i used to have an Amstrad 1512 with a CGA display)

(Submitted October 7, 2004 01:00:44 by Rob)

I remember that...thing...being in my house way back, my father worked for them. It was cool just to see numbers on the screen!!! Didn't work like a calculator had to put in formulas or code or whatever it was. It was fun as a kid to go...lkjfdh lasdjhf alskh sdflkha fdkjhlksdf lakdsjfh kj...ahhh, memories...bring on Oregon Trail 2005!!!lol

(Submitted September 28, 2004 07:52:58 by (a href=mailto:)Bobby Arsfenstienger(/a))

This is a cool site. Good job!! But whats a GUI

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