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HP Forums / Not HP Calculators / Not quite HP Calculators - but related v / Why did so many early / cheap calculators use 9V batteries?

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Why did so many early / cheap calculators use 9V batteries?
03-29-2018, 03:55 PM
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Gene Offline
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Why did so many early / cheap calculators use 9V batteries?
Been thinking about this for a while. Why use 9V?

Thoughts?


Links for (possibly) useful information:

Wiki on 9V: Link

Batteries: Why use 9V? Link
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Why did so many early / cheap calculators use 9V batteries? - Gene - 03-29-2018 03:55 PM



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