The Free On-line Dictionary of Computing (30 December 2018):

BBC Microcomputer
BBC Micro

   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.