TRS-80 Model 4
1983 personal computer / From Wikipedia, the free encyclopedia
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This article is about the TRS-80 Model 4s, successors to the Model III). For an overview of all computers using the TRS-80 and Tandy names, see List of TRS-80 and Tandy-branded computers.
The TRS-80 Model 4 is the last Z80-based home computer family by Radio Shack, sold from April 1983 through late 1991.
Quick Facts Manufacturer, Type ...
Manufacturer | Tandy Corporation |
---|---|
Type | Home and small business computer |
Release date | April 26, 1983; 41 years ago (1983-04-26) |
Introductory price | $1999 (64K, 2 floppy drives, RS-232C), $1699 (64K, 1 floppy drive, no RS-232C)[1] |
Discontinued | Late 1991 (Late 1991)[2] |
Operating system | TRSDOS 6.2,[3] LS-DOS 6.3[4], TRSDOS 1.3, LDOS 5.3, CP/M 2.2 or 3.0 |
CPU | Zilog Z80A @ 4 MHz, 6+ MHz with Z80B / Z80H, or HD64180 / Z180 |
Memory | 64 KB or 128 KB, 1 MB plus with third-party upgrades |
Display | Model 4 mode: 24 rows, 80 or 40 columns, Model III mode: 16 rows, 64 or 32 columns, block graphics |
Graphics | optional 640 by 240 pixels for $249 extra |
Sound | beeper |
Backward compatibility | TRS-80 Model III |
Predecessor | TRS-80 Model III |
Successor | none |
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