? UK Lasti välja Sinclair ZX80, mis maksis alla 100 naela. ? Jaapan Arvutimäng Pac-Man lasti välja 1981 Aeg Koht Sündmus ? USA Xerox 8010 ('Star') System oli esimene kommertssüsteem, mis kasutas WIMP-i(Windows, ikoonid menüüd, osutamis süsteemid) graafika kasutaja liideseid. ? UK Sinclair ZX81 lasti välja, sarnase hinnaga oma eelkäijale(ZX80) August 12 USA IBM teatas oma IBM personal arvutist. Selle disain oli algselt arvatust palju edukam ja sellest sai eeskuju hilisematele personaal arvutitele. Arvuti sisaldas MDA (Mono Display Adapter, text only), MS-DOS 1.0, PC-DOS 1.0. Võrreldes uuemate DOS-i süsteemidega oli MS- DOS 1.0 üpris algne.
graphics, for US$299. During its life, production peaks at 9,000 units per day. February Steve Wozniak's private plane crashes, leaving him with a temporary loss of short-term memory, lasting for over a month. MS-DOS runs for the first time on IBM's prototype microcomputer. Intel begins shipping evaluation sets of the iAPX432 microprocessor. Performance is claimed as 2 MIPS. March Sinclair unveils the ZX81 in the UK, based on the Z80A microprocessor, for under US$200. Mike Markkula takes over as president and chief executive officer at Apple Computer. Steve Jobs remains as chairman of the board. April Tim Patterson quits Seattle Computer Products, and joins Microsoft. Adam Osborne, of Osborne Computer Corporation, introduces the Osborne 1 Personal Business Computer at the West Coast Computer Faire. It features a Z80A CPU, 5-inch display, 64KB RAM, keyboard, keypad, modem, and two 5
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