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.

Abstract: In an electronic cash register comprising a keyboard including a plurality of entry keys and a decimal point key, and a display unit including an amount display section and a repeat display section, there is provided a control circuit for setting digits on the amount display section which correspond to the operated entry keys under normal operation. After the operation of the decimal point key the digits corresponding to the operated entry keys are displayed on the repeat display section.