Electronic computer with fraction and exponent display

Details Electronic computer with fraction and exponent display Electronic computer with fraction and exponent display

1990-09-28

1993-08-31

Nguyen, Long T.

Boots, shoes, and leggings

G06F 300

Patent

active

052414892

ABSTRACT:
A portable electronic computer for conducting fraction calculations has a display including a first multiple-digit display area for displaying the numerator of a fraction, and a second multiple-digit display area for displaying the denominator of the fraction. The numbers of digits of the numerator and denominator of a fraction to be displayed are obtained. The number of digits of the numerator is compared with the number of digits of the denominator. The difference between the number of digits of the numerator and the number of digits of the denominator is calculated. When the number of digits of the numerator is smaller than the number of digits of the denominator, the numerator is displayed on the first display area with its position shifted to an upper digit place according to the difference. When the number of digits of the denominator is smaller than the number of digits of the numerator, the denominator is displayed on the second display area with its position shifted to an upper digit place according to the difference.

REFERENCES:
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
patent: 5025403 (1991-06-01), Stephens
patent: 5067102 (1991-11-01), Eisenstein
Patents Abstracts of Japan vol. 13, No. 245 (P-881)(3593) Jun. 8, 1989 & JP-A-1 46 828 (NEC Corp.) Feb. 21, 1989.
"Word Perfect.RTM. Wordbook for IBM.RTM. Personal Computers", version 5.1, Copyright by Word Perfect Corporation 1989, pp. 335-341.
"Programming for the Sciences Application for the SHARP EL-512 Scientific Calculator", Copyright by Sharp Electronics Corporation 1983, pp. 10-11, 22-23.

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