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An archive of vintage computing — grounded in the actual documentation.

COMPUTOPEDIA / CALCULATORS / HP

HP

7 calculators models archived.

HP 12C
HP 15C
HP 16C
HP 41C
HP 41CV
HP 41CX
HP 71B

170 machines archived and counting.

Computopedia is a non-commercial archive. Every fact is grounded in period documentation and cited. Built from the public record.