zx-81
     
         an even more successful version of the sinclair
        zx-80, featuring a large uncommitted logic array instead
        of much discrete logic, an improved basic, and rather more
        expandability it could take 16kb ram packs.  it was
        launched around 1981 and was eventually replaced by the
        spectrum.
     
        1995-11-04
     
     
see also:
sinclair zx-80 uncommitted logic array basic ram spectrum