Interesting. I remember our first household calculator, late 1975, was also VFD from a different manufacturer, but it also had a square-root key. I suspect there was a commonly-used calculator chip that was used in several brands. I think my parents paid about 40 USD at that time.
Within a year, prices plummeted and features skyrocketed. I still have my APF scientific calculator, and that cost 10 USD and had all the trig/ln/exp/log functions. It outlasted a few others I bought later. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f291f94a-4620-4449-b517-7008596145cc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
