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Jake Schwartz · 02-06-2019, 09:06 PM

(01-12-2019 01:27 AM)dbbotkin Wrote: I've been using (and programming) HP calculators since 1972, starting with the HP 70 business model.
Cheers,
Donal

Since the HP-80 was introduced on February 1, 1973 and the HP-70 was introduced on August 1, 1974, which machine would you have been using in 1972? Just askin'....

Thanks,
Jake

pier4r · 10-06-2019, 07:15 PM

Little update to say that the 50g has run for thousand of hours as timer / stopwatch (weighted with value). I think I never let it run for so long for anything else (as the stopwatch on a 50g is a busy wait, there are no easy interrupts)

PANAMATIK · (This post was last modified: 10-08-2019 06:38 AM by PANAMATIK.)

I think we should also add to the list:

The HP-01 calculator has a stopwatch.

Also the "new ACT" HP-21E, HP-22E, HP-25E, HP-27E, HP-29E, HP-67E .... and the "Woodstock Low Power".

Bernhard