Tandy 2000
History
Table:
First-generation PC workalikes by IBM competitors[notes 7]

Computer name

Manufacturer

Date introduced

CPU

clock rate

Max RAM

Floppy disk capacity

Notable features

Olivetti M24/AT&T 6300

Olivetti, marketed by AT&T

1983 (AT&T 6300 June 1984)

8086

8 MHz (later 10 MHz)

640 KB

360 KB (later 720 KB)

true IBM compatible; optional 640x400 color graphics

Zenith Z-100

Zenith Data Systems

June 1982

8088

4.77 MHz

768 KB

360 KB

optional 8 color 640x255 graphics, external 8" floppy drives

HP-150

Hewlett-Packard

Nov 1983

8088

8 MHz

640 KB

270 KB (later 710 KB)

primitive touchscreen

Compaq Portable

Compaq

Jan 1983

8088

4.77 MHz

640 KB

360 KB

true IBM compatible

Compaq Deskpro

Compaq

1984

8086

8 MHz

640 KB

360 KB

true IBM compatible

MPC 1600

Columbia Data Products

June 1982

8088

4.77 MHz

640 KB

360 KB

true IBM compatible, credited as first PC clone

Eagle PC / 1600 series

Eagle Computer

1982

8086

4.77 MHz

640 KB

360 KB

750×352 mono graphics

TI Professional Computer

Texas Instruments

Jan 1983

8088

5 MHz

256 KB

320 KB

720x300 color graphics

DEC Rainbow

Digital Equipment Corporation

1982

8088

4.81 MHz

768 KB

400 KB

132x24 text mode, 8088 and Z80 CPUs

Wang PC

Wang Laboratories

Aug 1985

8086

8 MHz

512 KB

360 KB

800x300 mono graphics

MBC-550

Sanyo

1982

8088

3.6 MHz

256 KB

360 KB (later 720 KB)

8 color graphics with CGA resolution

Apricot PC

Apricot Computers

late 1983

8086

4.77 MHz

768 KB

720 KB

800x400 mono graphics, 132x50 text mode

TS-1603

Televideo

Apr 1983

8088

4.77 MHz

256 KB

737 KB

keyboard had palm rests, 16 function keys; built-in modem

Tandy 2000

Tandy Corporation

Sept 1983

80186

8 MHz

768 KB

720 KB

optional 640x400 8-color or mono graphics

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