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1977
Hardware Description
The APF MARK 55 is a scientific calculator with 12 digits precision and RPN (reverse polish notation) logic. It has 45 functions, 30 keys and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA sealed.
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Model Number:
55 -
Manufacturer:
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Hardware Type:
Calculator -
Manufacture Year:
1977 -
More Info:
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