Compact electronic calculator equipped with graphic display func

Details Compact electronic calculator equipped with graphic display func Compact electronic calculator equipped with graphic display func

1991-11-26

1993-05-11

Mai, Tan V.

Boots, shoes, and leggings

36471001, 395140, G06F 1566, G06F 314

Patent

active

052107086

ABSTRACT:
A compact calculator includes a matrix type display unit and executes a graphic representation of a functional formula. When both the functional formula and an integral range are inputted as information about a definite integral, a judgement is done whether or not an X-value increased while forming a graphic representation is located with the integral range. If this X-value is present within the integral range, then the pixels from the coordinate point (X,Y) to an X-axis are turned on. Thus, the integral range is graphically represented under the above-described process operation.

REFERENCES:
patent: 4535416 (1985-08-01), Kano et al.
patent: 4794553 (1988-12-01), Watanabe et al.
patent: 4794554 (1988-12-01), Tamiya
patent: 4908786 (1990-03-01), Kuno et al.
patent: 5067102 (1991-11-01), Eisenstein

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