Registers – Transfer mechanism – Traveling pawl
Patent
1975-08-29
1976-11-30
Malzahn, David H.
Registers
Transfer mechanism
Traveling pawl
G06F 738
Patent
active
039951480
ABSTRACT:
A calculator of the type having parenthesis keys, wherein there is provided means for performing an operation on an expression containing an exponent term or terms by touching keys in the left-to-right sequence as the expression reads.
REFERENCES:
patent: 3047228 (1962-07-01), Bauer et al.
patent: 3825736 (1974-07-01), Osborne
patent: 3839630 (1974-10-01), Olander et al.
Kawabata Yoichi
Machida Minoru
Ozawa Masayoshi
Seki Mitsuaki
Canon Kabushiki Kaisha
Malzahn David H.
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