Electronic desk-top calculator with indication function of store

Details Electronic desk-top calculator with indication function of store Electronic desk-top calculator with indication function of store

1981-06-09

1983-10-11

Malzahn, David H.

Boots, shoes, and leggings

G06F 314

Patent

active

044096666

ABSTRACT:
An improved electronic desk-top calculator provided with a warning function, whereby when data processed by an operator exceed a predetermined value, the operator can recognize it. The calculator comprises a plurality of memory means, a plurality of key means for accessing the memory means, a display means for indicating the accessed memory means, means for judging whether the content of the accessed memory is within a predetermined range and means responsive to the judging means for selectively modulating the display means.

REFERENCES:
patent: 3428793 (1969-02-01), Scuitto
patent: 3878380 (1975-04-01), Tsuiki
patent: 3974497 (1976-08-01), Ohkawa et al.
patent: 3983380 (1976-09-01), Sharif et al.

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