TRS-80 Model 1 NK
| Description | |
| Manufacturer | Tandy Radio Shack |
| Model | TRS-80 Model I |
| Date Announced | 1977 |
| Date Canceled | 1981 |
| Number Produced | Hundreds of Thousands |
| Country of Origin | USA |
| Price | About $600 for the base machine with display |
| Current Value | $25-$250 |
| Specifications | --- |
| Processor | Zilog Z80 |
| Speed | 4 MHz |
| RAM | 4K to 16K internally, 32K more with the expansion interface |
| ROM | 4K (12K on Level II) |
| Storage | |
| Expansion | TRS-80 Expansion Base |
| Bus | N/A |
| Video | |
| I/O | Parallel and Serial with expansion unit |
| OS Options | TRS-DOS, NewDOS, others. |
| Notes | The TRS-80 was one of the first "complete" personal computers available. It was introduced at around the same time as the Commodore Pet 2001 and the Apple II and competed with those machines directly. |
| Related Items in Collection | Expansion Interface, Disk drive, some software, most manuals, TRS-80 Model I without the Numeric Keypad |
| Related Items Wanted | Additional software, disk drives, voice synth unit, other Tandy peripherals (modem, hard drive, etc.) |
The TRS-80 Model I came in several different versions. You could get the machine either with or without a numeric keypad and as a Level I (base) or Level II (upgraded BASIC and RAM) machine. The Level I model had a 4K BASIC with very limited capabilities. The Level II version had a 12K BASIC which was far more useful.
This machine is a Model I, Level II with the numeric keypad, expansion interface, drives and (flakey) monitor.
Thank you to Bob Wickman who donated this machine.
Another TRS-80 was added to the collection. This one came boxed in (mostly) original packages with two aftermarket drives, a Hayes 300 baud modem and more.
