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1976
Hardware Description
The HP-91 was HP's first battery powered printing calculator. The printer was a moving head thermal design that printed from about 1 to 1.5 lines per second. This relatively low speed was designed to conserve battery power. Thermal printing was chosen because it was small, light an quiet.
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Model Number:
91 -
Manufacturer:
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Hardware Type:
Office Equipment -
Manufacture Year:
1976 -
More Info:
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