Key input control apparatus
AssigneeCasio Computer Co., Ltd.
InventorHaruo Yamamoto
Life of this patent
Estimating the term…
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.
Claims17
A key input control apparatus comprising:
- key input means (1) having keys including function keys and a special key, said keys producing electrical signals corresponding respectively to the keys depressed, the special key having a constant number entry function and an arithmetic operation designating function;
- memory means (6, 15, 13) coupled to said key input means for storing said signals provided from said key input means, which stored signals correspond to keys of said key input means which are depressed in the order of the key operations;
- designating means (21, 22, 17, 16) coupled to said memory means and to said key input means and which is responsive to operation of said special key for selectively designating a constant number data inputting function or an arithmetic operation designating function, in accordance with said signals which have been stored in said memory means, which stored signals correspond to the keys of said key input means which have been depressed;
- function execution means (24, 18, 20, 11, 23, 27) coupled to said memory means and to said designating means for executing a function specified by said designating means;
- and
- display means (26) coupled to said key input means and to said function execution means for selectively displaying one of data keyed in from said key input means and the results of the function executed by said function execution means on the basis of the data keyed in from said key input means.
A key input control apparatus comprising:
- key input means having keys including function keys, a special key having a constant number entry function and an arithmetic operation designating function, and an entry key to execute an operation by depression of the entry key to enter a first operand data after a first operand data is registered and by depression of a function key after a second operand data is registered, said keys of said key input means producing signals when depressed;
- memory means (6, 15, 13) coupled to said key input means for storing signals provided from the keys of said key input means which are depressed, in the order of the key depressions;
- designating means (16, 17, 21, 22) coupled to said memory means and to said key input means for selectively designating one of said functions of said special key in accordance with said signals which have been stored in said memory means, which stored signals correspond to the keys of said key input means which have been depressed;
- function execution means (24, 18, 20, 11, 23, 27) coupled to said memory means and to said designating means for executing a function specified by said designating means;
- and
- display means (26) coupled to said key input means and to said function execution means for selectively displaying one of data entered from said key input means and the result of the function which is executed by said function execution means on the basis of the data keyed in from said key input means.
Dependencies are inferred from the claim text.