General purpose calculator having factorial capability

Details General purpose calculator having factorial capability General purpose calculator having factorial capability

1975-04-08

1977-09-06

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

G06F 1520

Patent

active

040470121

ABSTRACT:
The battery powered hand-held calculator for performing the arithmetic, trigonometric and logarithmic functions disclosed herein includes a factorial function which conveniently calculates factorials of positive integers.

REFERENCES:
patent: 3760171 (1973-09-01), Wang et al.
patent: 3863060 (1975-01-01), Rode et al.

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