Combination telephone and calculator with common keyboard having

Details Combination telephone and calculator with common keyboard having Combination telephone and calculator with common keyboard having

1977-01-07

1978-05-09

Stellar, George G.

Textiles: fiber preparation

179 90K, 197 98, 400495, H04M 121, H04M 123, H04M 1100

Patent

active

040888371

ABSTRACT:
In a combination telephone set which includes a housing, a numerical keyboard disposed on the housing which has at least ten keys, and an electronic calculator contained within the housing, and wherein the keys are selectably useable as input means for the telephone set so as to generate a plurality of tones, and for the calculator so as to process data, and wherein at least ten indicia are disposed on each of the keys respectively, the improvement which includes selection means for reversibly changing at least one of the indicia disposed on at least one of the keys from operation as the input means for the telephone set to another of the indicia for operation as the input means for the calculator.

REFERENCES:
patent: 3627936 (1971-12-01), Cullen
patent: 3879722 (1975-04-01), Knowlton
IBM Technical Disclosure Bulletin, vol. 12, No. 4, Sep. 1969, p. 622, "Quick Changeable Keytop Indicia," D. L. Potak.

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