| Manufacturer | Zenith Data Systems |
|---|---|
| Type | personal computer |
| Release date | June 1982 |
| Operating system | Available with CP/M-80, CP/M-86 and Z-DOS (non-IBM compatible MS-DOS variant)[1] |
| CPU | Dual processors: 8085 and 8088[1] |
| Memory | Base 128 KB RAM, expandable to 192 KB on board, to 768 KB with S-100 cards. (Video RAM was paged into the 64 KB block above 768 KB). |
| Storage | Two 320 KB 40-track double-sided 5.25-inch Floppy disk drives. Socket enabled direct plug-in of external 8-inch floppies. |
| Display | 25 lines × 80 characters[1] |
| Graphics | 640×225 bitmap display. 8-color (low-profile model), or monochrome upgradable to 8-level greyscale (all-in-one).[1] |
| Input | 2× serial ports (2661 UART), one Centronics printer port (discrete TTL chips), light pen port |
| Power | 300 watts[1] |
The Z-100 computer is a personal computer made by Zenith Data Systems (ZDS). It was a competitor to the IBM PC.