Electronic cash register

Details Electronic cash register Electronic cash register

G - Physics

07

G

354/33

G07G 1/00 (2006.01) G06F 3/02 (2006.01) G07G 1/12 (2006.01)

Patent

CA 1072213

Abstract of the Disclosure An electronic cash register comprises: a keyboard including a group of entry keys for entering input data representing the price of a merchandise item; a read only memory; a memory section including an entry data memory for temporarily storing the input data, a counter for counting number of the digits of the input data and a totalizer for accumulating the input data; a central processor unit coupling with the keyboard, the read only memory, the digit number counter, and the memory section; and prohibiting means for prohibiting registration of a specific input data with a digit number larger than a predetermined one. The keyboard further includes at least a release key for releasing the registration prohibition for such specific input data, and the cash register further includes means for permitting at least one of the specific input data to be registered when the release key is actuated. With such a construction, the erroneous registration is prevented and the number of the registrations of merchandise prices coincides with that of the registrations of merchandise items sold.

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