Osborne 1

Osborne 1

Also known as	OCC-1
Developer	Adam Osborne
Manufacturer	Osborne Computer Corporation
Type	Portable computer
Release date	April 3, 1981; 43 years ago (1981-04-03)
Introductory price	US$1795 (today $6020)
Discontinued	1983 (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″ monochrome CRT display, 52 x 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)
Mass	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.^[1] 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.