Devices for displaying or performing operations in a two-valued

Details Devices for displaying or performing operations in a two-valued Devices for displaying or performing operations in a two-valued

1979-05-31

1981-06-16

Grieb, William H.

Education and demonstration

Miscellaneous

G09B 132

Patent

active

042735424

ABSTRACT:
A system for displaying or performing operations in a two-valued system comprising a plurality of devices each having at least one symbol, each symbol having iconicity, eusymmetry, and frame consistency so that said symbol is consistent with respect to a selected frame of reference, said symbol further being symmetry positional so that operations in said two-valued system can be displayed or performed by changing the orientation of said symbol symmetrically with respect to said frame. This frame of reference consists of four points in a Cartesian co-ordinate system, preferably defining a basic square. The symbols are preferably letter-shaped symbols which can be assigned a phonetic value.

REFERENCES:
patent: 466296 (1891-12-01), Clark
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patent: 1162629 (1915-11-01), Mager
patent: 2386114 (1945-10-01), Hayes
patent: 2723465 (1955-11-01), Silverstein
patent: 3794326 (1974-02-01), Bialek
patent: 3822487 (1974-07-01), Koch
patent: 3904208 (1975-09-01), Grossman

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