APF MARK 21

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1976
Description

The APF MARK 21 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 24 keys and a VFD (vacuum fluorescent) display. The power source is Sealed battery pack.

Legacy Content: Unknown Author
Hardware Type
Calculator
Manufacturer
APF Electronics, Inc.
Model Number
21
Launch Date
1976

Citations:

Courtesy of Calculator.org
Courtesy of MyCalcDB
Courtesy of Wikipedia
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