Osborne 1
| Also known as | OCC-1 |
|---|---|
| Developer | Adam Osborne |
| Manufacturer | Osborne Computer Corporation |
| Type | Portable computer |
| Release date | April 3, 1981 |
| Introductory price | US$1795 (today $6210) |
| Discontinued | 1983 |
| Operating system | CP/M |
| CPU | Zilog Z80 @ 4 MHz |
| Memory | 64 KB RAM |
| Storage | Dual 5¼-inch, single-sided, single-density floppy drives (optional dual-density upgrade) |
| Display | 5-inch monochrome CRT display, 52 × 24 characters text |
| Graphics | TTL logic |
| Power | 37 watts max |
| Dimensions | W: 20.5 inches (52 cm) H: 9 inches (23 cm) D: 13 inches (33 cm) |
| Weight | 24.5 lb (11.1 kg) |
| Successor | Osborne Executive |
The Osborne 1 is the first commercially successful portable computer, released on April 3, 1981 by Osborne Computer Corporation. It weighs 24.5 lb (11.1 kg), cost US$1,795, and runs the CP/M 2.2 operating system. It is powered from a wall socket, as it has no on-board battery, but it is still classed as a portable device since it can be hand-carried when the keyboard is closed.
The computer shipped with a large bundle of software that was almost equivalent in value to the machine itself, a practice adopted by other CP/M computer vendors. Competitors quickly appeared, such as the Kaypro II.