Data input device having arithmetical function

Details Data input device having arithmetical function Data input device having arithmetical function

1991-08-29

1993-07-20

Mai, Tan V.

Boots, shoes, and leggings

36470909, G06F 300

Patent

active

052299589

ABSTRACT:
An arithmetical function is provided onto a keyboard connected to a computer for executing an application software program. A desired arithmetical function is carried out by using a group of keys on the keyboard after the execution of the application software program in the inside of the computer is interrupted. The arithmetical result data is given as input data to the application software program executed in the inside of the computer. A display section is provided on the keyboard separately from a display section of the computer, so that the process of carrying out the arithmetical function can be checked on the keyboard.

REFERENCES:
patent: 4107784 (1978-08-01), Van Bemmelen
patent: 4386412 (1983-05-01), Ito
patent: 4412300 (1983-10-01), Watson et al.
patent: 4530069 (1985-07-01), Desrochers
patent: 4811257 (1989-03-01), Sumitani et al.

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