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!
