Brand: Tandy
Founded: 1963
In:
USA
Defunct: 2000
Tandy (along with Commodore and Apple) pioneered the pre-assembled personal computer market, which had previously been offered in kits. With the TRS-80 (in 1977) and the TRS-80 Color Computer (popularly known as the "CoCo") (in 1980), which were very popular before the IBM PC, sold in Radio Shack stores at a time when there were very few computer stores.
Manufacturer: Tandy
Launches: 1980
Made in: USA
CPU:
Motorola 6809E
@ 0.895MHz
Memory: 4 KB ~ 512 KB
Hard drive:
None
Operative System: OS-9
The second model sold by RadioShack.
Despite sharing a name with the previous TRS-80, the Color Computer is a completely different and incompatible system, a radical change in design and compatibility with its Motorola 6809E processor instead of the previous Zilog Z80 models.
Manufacturer: Tandy
Launches: 1983
Made in: USA
CPU:
Zilog Z80
@ 4MHz
Memory: 64 KB ~ 128 KB
Support A: Diskette 5¼"
Support B: Diskette 5¼"
Hard drive:
None
Operative System: TRSDOS
The Model 4P is a portable version introduced in September 1983 and discontinued in early 1985. It is functionally identical to the dual-drive desktop model but lacks the card-edge connector for two external floppy drives and the cassette tape interface. It has a slot for an internal modem card and could emulate a Model III.
Manufacturer: Tandy
Launches: 1984
Made in: USA
CPU:
Intel 8088
@ 4.77MHz
Memory: 128 KB ~ 640 KB
Hard drive:
None
Operative System: MS-DOS
The Tandy compatible PC.
Manufacturer: Tandy
Launches: 1985
Made in: USA
CPU:
Zilog Z80
@ 4MHz
Memory: 64 KB ~ 128 KB
Hard drive:
None
Operative System: TRSDOS
The Model 4D with the Deskmate Productivity Suite included was introduced in early 1985. It has a revised CPU board using faster gate array logic and includes the floppy disk controller and RS-232C circuitry, all on a single board.
It has two internal double-sided floppy disk drives and is the last model descended from the 1977 Model I.
It retailed for $1,199 upon its introduction in 1985.
During 1987-1988, retail stores removed the Model 4D from display, but it was available by special order until 1991.
