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Microprofessor MPF-1B
CPU: Z80A@1.79MHz RAM: 2K ROM: 2K Year: 1981 Sound: Beeper Graphics: Six digits LED display Notes: Has printer and interface card.
Additional information can be found at http://www.old-computers.com/museum/computer.asp?c=479&st=1 and https://en.wikipedia.org/wiki/Microprofessor_I