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Why do some HP calculators have springs inside?
12-24-2022, 08:07 PM (This post was last modified: 12-24-2022 08:14 PM by Steve Simpkin.)
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Steve Simpkin Offline
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RE: Why do some HP calculators have springs inside?
They were used to electrically connect the front metal panel to the rear metal back plate. This provided enhanced ESD protection to reduce the chances that static electricity discharges would affect the calculator.
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RE: Why do some HP calculators have springs inside? - Steve Simpkin - 12-24-2022 08:07 PM



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