from
The Free On-line Dictionary of Computing (8 July 2008)
Motorola 14500B
<processor> (MC14500B) A 1-bit {ICU} from {Motorola}.
Probably the limit in small processors, the 14500B had a 4-bit
instruction and controlled a single data read/write line, used
for application control. It had no address bus - that was an
external unit that was added on. Another {CPU} could be used
to feed control instructions to the 14500B in an application.
It had only 16 pins, less than a typical {RAM} chip, and ran
at 1 {MHz}.
(1994-11-30)