Calculator with easily enterable constant calculation mode

Details Calculator with easily enterable constant calculation mode Calculator with easily enterable constant calculation mode

1992-04-02

1994-02-08

Nguyen, Long T.

Boots, shoes, and leggings

G06F 300

Patent

active

052853993

ABSTRACT:
A computer is provided which is a so-called arithmetic expression storing type computer and in which a constant calculation mode can be set without additionally installing a key and the function of the constant calculation mode has an enhanced ability. When a rightward cursor is operated under a state that a cursor is positioned at the digit rightward subsequent to an entered expression and a binary operator is entered at the last digit of the expression, an expression which has been entered before the operator is calculated, and the calculated result is scored as a constant. When the rightward cursor is operated again under a state that the constant calculation mode is set, the constant which has been set as a first operand is reset to a second operand. An expression set in the constant calculation mode is displayed on a display screen.

REFERENCES:
patent: 4901262 (1990-02-01), Tanaka et al.
patent: 5067102 (1991-11-01), Eisenstein
patent: 5109518 (1992-04-01), Kawawaki et al.
patent: 5134577 (1992-07-01), Kawawaki
Sharp's Manual, "Applications for the Sharp EL-512 Scientific Calculator", published 1983, Chapter 1 part C.

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