Key input control apparatus

Details Key input control apparatus Key input control apparatus

1979-06-20

1981-11-24

Malzahn, David H.

Boots, shoes, and leggings

G06F 748

Patent

active

043028160

ABSTRACT:
A key input control apparatus is provided with a key input unit having a plurality of keys including a special key with an entry function and a calculation designating function. The output signals provided from keys depressed in the key input unit are stored in a memory unit in the order of the key depressions. When the special key is depressed, a logic circuit executes a given calculation designating function assigned to the special key in accordance with the output signal, which has been stored corresponding to the kinds of the keys in the memory unit, taken out from the memory unit. The operation specified by the logic circuit is executed by an arithmetic logic circuit. Data keyed in from the key input unit or result of the operation executed on the basis of the data keyed in is displayed by a display unit.

REFERENCES:
patent: 3597600 (1971-08-01), Herendeen
patent: 3914587 (1975-10-01), Haines
patent: 4158233 (1979-06-01), Olander, Jr. et al.

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