Fraction entry and display

Details Fraction entry and display Fraction entry and display

1989-10-30

1991-06-18

Shaw, Dale M.

Boots, shoes, and leggings

G06F 302

Patent

active

050254030

ABSTRACT:
A calculator receives fraction values directly, without requiring the user to perform mathematic operations, by use of a primary key to separate digits of the whole number, numerator and denominator. The calculator also displays fractions with a user specified denominator allowing convenient application to user needs. By reducing mental effort in entering numeric values and interpreting results of calculations, the calculator is better adapted to suit a particular user's needs.

REFERENCES:
patent: 4064398 (1977-12-01), Kishimoto et al.
patent: 4081859 (1978-03-01), Goldsamt et al.
patent: 4118783 (1978-10-01), Collins
patent: 4121760 (1978-10-01), Cochran et al.
patent: 4475165 (1984-10-01), Rizk et al.
patent: 4488250 (1984-12-01), Lipsey et al.
patent: 4545022 (1985-10-01), Hughins
patent: 4744044 (1988-05-01), Stover et al.
patent: 4800514 (1989-01-01), Earle
Marion et al., "Wrist Instrument Opens New Dimension in Personal Information", Hewlett-Packard, Journal, Dec. 1977, pp. 2-10.

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