System for controlling a numeral display

Details System for controlling a numeral display System for controlling a numeral display

1975-08-13

1976-09-14

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

235 6034, 235 643, G06F 314

Patent

active

039810003

ABSTRACT:
The display control system incorporated in an electronic desk top calculator includes mark suppression means for suppressing the display of a mark or marks such as a comma associated with an insignificant digit or digits in addition to the zero suppression of the insignificant digit or digits in a digit position higher than the most significant digit to be displayed, and brightness of the display is improved and flicker is eliminated by holding the displayed information during a time period corresponding to more than one digit time, and overlapped displaying of the numeral, beat and noise are prevented by inserting blanking between adjacent display information signals applied to the displaying units.

REFERENCES:
patent: 3336587 (1967-08-01), Brown
patent: 3341838 (1967-09-01), Ragen
patent: 3432845 (1969-03-01), Douglas et al.
patent: 3537073 (1970-10-01), Sakoda et al.

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