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HP21 problem
12-17-2014, 05:26 AM (This post was last modified: 12-17-2014 05:53 AM by vk6ti.)
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HP21 problem
Going though testing calculators to put in the working / non working drawer,
I came across a HP 21 that soon as it was powered up, the full display comes up, and starts to count up, and would probably continue till power was removed.
Is there anyone who could explain this phenomenon?, as I would like to know for my own curiosity, and information.

FYI rate of speed is approx. 50 steps / loops per second

Thankyou in advance

Merry Christmas to everybody
Ray
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Messages In This Thread
HP21 problem - vk6ti - 12-17-2014 05:26 AM
RE: HP21 problem - Katie Wasserman - 12-17-2014, 02:57 PM
RE: HP21 problem - PANAMATIK - 12-18-2014, 08:28 AM
RE: HP21 problem - MarkPalmer - 12-18-2014, 11:56 AM
RE: HP21 problem - PANAMATIK - 12-19-2014, 04:19 PM
RE: HP21 problem - MarkPalmer - 12-18-2014, 04:09 PM
RE: HP21 problem - aj04062 - 12-18-2014, 04:24 PM
RE: HP21 problem - PANAMATIK - 12-18-2014, 05:55 PM
RE: HP21 problem - vk6ti - 12-19-2014, 12:07 AM



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