Electronic cash register

Abstract

An electronic cash register comprising: a power source for energization of said electronic cash register, a power recovery detecting circuit operatively coupled to said power source for detecting the power recovery after occurrence of the power failure, a keyboard for entering numerals and various functions, first price and department code registers for storing the entered price and department code of commodities, respectively, a counter for counting the number of digits of the department code, an adder responsive to the count up output of the counter for providing a cumulative total amount of the prices of the commodities, a total amount non-volatile register for storing the cumulative total amount, a second price and department code non-volatile registers responsive to the count up output of the counter for receiving and storing the price and department code information stored in the first price and department registers respectively, and a printing means responsive to the total, the second price and the second department code registers for printing out the total, price, and department code of the commodities, said printing means being adapted to be responsive to said power recovery detecting circuit for printing out again the datas which were to be printed out before the occurrence of power failure.

Dependencies are inferred from the claim text.