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TRS-80

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description TRS-80 Overview

The TRS-80 is a desktop microcomputer introduced by Tandy Corporation through its Radio Shack stores in 1977. It stands out as one of the earliest mass-produced and fully assembled personal computers available to consumers. The system featured a Zilog Z80 microprocessor and shipped with a monitor and keyboard, making it accessible for small businesses and home users. It played a significant role in popularizing personal computing during the late 1970s and early 1980s.

help TRS-80 FAQ

What was the original TRS-80 computer?

The original TRS-80 Model I was introduced by Tandy through Radio Shack in 1977. It used a Zilog Z80 processor and was sold as a fully assembled personal computer for consumers.

How much memory did the original TRS-80 have?

Early Model I configurations could be sold with 4 KB of RAM, while later upgrades and configurations provided more memory. The exact amount depends on whether the machine used Level I or Level II BASIC and which expansion hardware was installed.

What operating system did the TRS-80 Model I use?

The Model I commonly booted directly into Microsoft BASIC, with early systems using Level I BASIC and later systems using Level II BASIC. Floppy-disk users could add the TRS-80 Disk Operating System, commonly called TRSDOS.

Which computers competed with the TRS-80?

The Apple II and Commodore PET were major contemporary competitors in the late 1970s and early 1980s. Unlike many kit computers, the TRS-80 was sold through Radio Shack as a ready-to-use retail system.

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