MRC
路My mother brought home a Texas Instruments digital calculator around 1975- it had a red LED display. I remember her telling us it was very expensive (several hundred if I recall) so it was not a toy. Within 5 years you got one free opening a checking account at a bank.
I bought my first top of the range TI calculator in 1974, it cost 拢65, or about US$200 at the time. I'd been tracking calculator costs for a while and reckoned they'd bottomed out
5 years later you got a 4-function calculator for nothing, but the top TI I had by then was programmable, had a magnetic card reader/writer, and you could buy pre-programmed PROMs with libraries for very specialised functions and it even had a printer interface.
By then I really had no need for such a calculator because I could get all the computer time I wanted with no quota restrictions or questions asked. Cool though 馃槑


























