On Sat, 18 Sep 2021, dwight via cctalk wrote:
Of course, Busicom was the first programed
microprocessor driven
calculator, it wasn't the first calculator using calculator ICs. That is
what Busicom was trying to compete with, when going to Intel in the
first place.
I think that the Sinclair used TI calculator ICs.
Unless he had a special "in" with TI, AND was fastest to market, then it
is doubtful that he could legitimately claim to be "FIRST".