A series of 6502-based personal computers launched by {Acorn Computers} Ltd. in January 1982, for use in the British Broadcasting Corporation' s educational programmes on computing.The computers are noted for their reliability (many are still in active service in 1994) and both hardware and software were designed for easy expansion.The 6502-based computers were succeeded in 1987 by the Acorn Archimedes family.xbeeb is a BBC Micro emulator for Unix and X11.