microcomputer launched in 1977, sold by Tandy Corporation through RadioShack stores

The TRS-80 is a computer made by Tandy Corporation sold by Radio Shack.

TRS-80 Model I - Rechnermuseum Cropped.jpg
TRS-80 Model I with Expansion Interface
TypeHome computer
Release dateAugust 3, 1977 (1977-08-03)[1]
DiscontinuedJanuary 1981
CPUZilog Z80 @ 1.78 MHz
Memory4 KB ~ 48 KB


  1. Forster, Winnie (2005). The encyclopedia of consoles, handhelds & home computers 1972–2005. GAMEPLAN. p. 17. ISBN 3-00-015359-4. CS1 maint: discouraged parameter (link)