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Keyboard Builders' Digest / Keyboard Spotting

TRS-80 Model 4

The TRS-80 Model 4 is the last Z80-based home computer family by Radio Shack, sold from April 1983 through late 1991. Posted by Tomegajones.
Published October 25, 2021

Tandy Corporation introduced the TRS-80 Model 4 in April 1983 as the successor to the TRS-80 Model III. The Model 4 has a faster Z80A 4 MHz CPU,[5] larger video display of 80 columns by 24 rows, bigger keyboard, and can be upgraded to 128KB of RAM (source).

According to an archive 80 micro magazine issue, a diskless Model 4 with 16KB RAM cost $999; with 64KB RAM and one single-sided 180K disk drive it cost $1699; with 64KB RAM and two drives it cost $1999.

More info:

Published on Mon 25th Oct 2021. Featured in KBD #49 (source).

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