The Museum of HP Calculators
HP Forum Archive 05
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Message #1 Posted by Erik Wahlin on 9 Feb 2001, 5:52 p.m.
Just for fun, I ran my HP-45s, HP-55, and HP-41CX in timer modes for an hour. Since the HP-45s do not have a quartz crystal, I was interested in their performance compared to the HP-55 and HP-41CX which do have clock crystals.
The results are:
The HP-55 and HP-41CX were very close (within 0.09 seconds)
The HP-45s ran slow and were 7 minutes off the pace.
It was not easy to start all these calculators at the same time, but I do not think the error would be greater than about 0.02 seconds.
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