Electronic calculator displaying a partial result obtained from

Details Electronic calculator displaying a partial result obtained from Electronic calculator displaying a partial result obtained from

1974-04-30

1976-07-27

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

G06F 738

Patent

active

039719243

ABSTRACT:
An electronic calculator having a pair of parenthesis keys is capable of displaying a temporary partial result obtained from an operation performed on a portion of a numerical expression to be calculated, which portion is included within a pair of parentheses. The partial result may be continuously displayed until the next key operation is executed. A temporary result from an exponent term in an expression is also indicated visually.

REFERENCES:
patent: 3720820 (1973-03-01), Cochran
patent: 3825736 (1974-07-01), Osborne
patent: 3839630 (1974-10-01), Olander et al.

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