Lost Computer Tales on Twitter: "Bill Hewlett and Dave Packard operate the HP 9100A, one of the first programmable Desktop Calculators (1968) #retrocomputing #rchpic https://t.co/QozwAu3LOL" / Twitter
HP 9100A: Launching the PC Revolution - HP History
The 9100 Part 2
HP 9100A: Launching the PC Revolution - HP History