The 8086 is a 16-bit microprocessor chip designed by Intel and
introduced on the market in 1978, which gave rise to the x86
architecture. Intel 8088, released in 1979, was essentially the
same chip, but with an external 8-bit data bus (allowing the use
of cheaper and fewer supporting logic chips), and is notable as
the processor used in the original IBM PC. In 1972, Intel
launched the 8008 , the first 8-bit microprocessor. It
implemented an instruction set designed by Datapoint corporation
with programmable CRT terminals in mind, that also proved to be
fairly general purpose. The device needed several additional ICs
to produce a functional computer, in part due to its small
18-pin "memory-package" which prevented a separate address bus
(Intel was primarily a DRAM manufacturer at the time). Two years
later, in 1974, Intel launched the 8080, employing the new
40-pin DIL packages originally developed for calculator ICs to
enable a separate address bus. It had an extended instruction
set that was source- (not bin