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See below for specifications and information on this system.
Specifications and information
| Key Dates: | Announced August 1977 Discontinued January 1981 due to FCC rules for RF interference |
| Original Price: | $600 |
| CPU: | Zilog Z-80 |
| Memory: | 4K RAM, expandable to 16K in system unit, 48K via Expansion Interface |
| Operating System: | ROM BASIC; TRSDOS with Expansion Interface and disk drive |
| Input/Output: | DIN port for TRS-80 composite monochrome monitor; DIN port for cassette player; card
edge expansion connector for Expansion Interface or parallel printer With Expansion Interface: Floppy disk interface card edge connector; Parallel Printer card edge connector; Serial Port card edge connector (with optional serial port board installed in Expansion Interface) |
| Resolution: | Monochrome 128x48 graphics; 64x24 character display |
| Bus: | TRS-80 Bus |
| Other Items in Collection: | LNW Expansion Interface (pictured); Radio Shack Expansion Interface; disk drives; spare monitor; spare system unit; various software; some documentation; 5 meg hard disk drive |
| Items Needed: | Power supplies for spare unit; Expansion Interface in good shape; documentation |
My first personal computer was a TRS-80, in September of 1977.
Here's a look at the Radio Shack 5 Meg Hard Disk Drive for the TRS-80 Model 1/3:
The famous & rare TRS-80 Model 1 Voice Synthesizer module:
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Last modified: April 17, 2003