03/04/1981 The first successful portable computer is unveiled in San Francisco
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The Osborne-1: A Quick Look
EEVblog #955 - World's First Portable Computer Teardown
The Osborne 1 was the first commercially successful portable microcomputer, released by Osborne Computer Corporation. It weighed 10.7 kg, cost US$1,795, and ran the CP/M 2.2 operating system. Powered directly from a mains socket as it had no on-board battery, it was still classed as a portable device since it could be hand-carried when packed.