Osborne OSBORNE 1 & Executive - Various (TOSEC-v2005-02-03)

"The Osborne 1 was the first commercially successful portable microcomputer, released in April, 1981 by Osborne Computer Corporation. It weighed 10.7 kg (23.5 pounds), cost US$ 1795, and ran the then-popular CP/M 2.2 operating system. Its principal deficiencies were a tiny 5 inch (13 cm) display screen and single sided, single density floppy disk drives whose disks could not contain sufficient