Electronic cash register with means for correcting erroneously p

Registers – Systems controlled by data bearing records – Time analysis

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235 3, 235433, 364405, G06F 1100, G07G 500

Patent

active

040957381

ABSTRACT:
An electronic cash register comprises a keyboard having a data input key and a void key, a central processor unit coupled to the keyboard and a read only memory coupled to the central processor unit, the read only memory having a program stored therein. A memory means is coupled to the central processor unit and includes a printing data memory for storing an input data item supplied from the data input key and the total of a plurality of the input data items. Further provided is a printing means which includes a buffer register, a printer driver and a printer for printing the plurality of input data items and the total thereof successively on a recording paper. The printing driver includes means for feeding the recording paper by one row for printing a new data item when the new data item is supplied to the buffer register, and an inhibiting means for inhibiting the one row feeding of the recording paper when the void key is depressed and for printing a correcting symbol directly on a data item printed on the paper before the new data item is supplied to the buffer register.

REFERENCES:
patent: 3105636 (1963-10-01), Greene
patent: 3186636 (1965-06-01), Hoffman et al.
patent: 3541526 (1970-11-01), Levy et al.
patent: 3899775 (1975-08-01), Larsen
patent: 4003030 (1977-01-01), Takagi et al.

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