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

Intel 8080
8080

    The successor to the Intel 8008.  The 8080 had a
   16-bit address bus and an 8-bit data bus.  It had seven
   8-bit registers (six which could also be combined as three
   16-bit registers), a 16-bit stack pointer to memory which
   replaced the 8008's internal stack and a 16-bit program
   counter.  It also had 256 I/O ports (so I/O devices could be
   connected without needing to allocate any addressing space as
   is required for memory mapped devices) and a signal pin that
   allowed the stack to occupy a separate bank of memory.

   Shortly after the 8080, the Motorola 6800 was introduced.

   [Date?]

   (1994-10-31)