Thanks for the info on chip made by Texas Instruments. It was used in a
pocket/plug-in calculator I had while working as a payroll clerk back in
the early 70s.
The link is:
http://www.vintagecalculators.com/html/ti_cal-tech1.html
I?ve written in my book on the History of the Microcomputer a history of
the processing chip as the timeline follows an approximation of:
Late *1950*s ? patent on integrated circuit by Texas Instruments
*1950*s to *1960*s ? move from vacuum tubes to TTL technology
programs/functions in ROM
*1970*s ? 4004 to 8008 to 8086 -> This begins the era of electronic
computerization of society.
-> programmable by user and/or firmware
We are now in the early human era of the electronification-computerization
of society. *Classic Computing* takes us back to the very early years.
Happy computing!