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HP-41 Speed Upgrade
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03-04-2024, 04:57 AM
Post: #1
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HP-41 Speed Upgrade
Back in the early 80's a friend and I added a resister internally (not sure what we added as he was the smart one) to the calculator that was activated by a magnet on the side of the HP. Does anyone remember where the instructions for this upgrade are?
Randy |
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HP-41 Speed Upgrade - knife31 - 03-04-2024 04:57 AM
RE: HP-41 Speed Upgrade - MeindertKuipers - 03-04-2024, 10:53 AM
RE: HP-41 Speed Upgrade - Hiwi - 03-04-2024, 12:27 PM
RE: HP-41 Speed Upgrade - knife31 - 03-04-2024, 09:02 PM
RE: HP-41 Speed Upgrade - knife31 - 03-05-2024, 04:49 PM
RE: HP-41 Speed Upgrade - Sylvain Cote - 03-05-2024, 06:27 PM
RE: HP-41 Speed Upgrade - Hans Brueggemann - 03-05-2024, 05:44 PM
RE: HP-41 Speed Upgrade - knife31 - 03-06-2024, 04:37 AM
RE: HP-41 Speed Upgrade - Etienne Victoria - 03-06-2024, 02:19 PM
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