microcomputer

noun2

1. •
   (historical) A computer designed around a microprocessor, smaller than a minicomputer or a mainframe.

   • In recent years, it had become the hallmark of the scientist, much as the stethoscope was that of the physician and the microcomputer that of the statistician. — 1956
2. •
   (old-fashioned) A microprocessor that is based on a single chip.