Data print control in an electronic cash register

摘要

An electronic cash register includes a printer system for printing out a transaction data on a receipt bill or a journal paper. A print preset system is provided for selectively printing out the transaction data. A print inhibition preset key develops a print inhibition command which is stored at the last bit of a memory address of the corresponding transaction data. In a normal registration operation mode, a signal detection circuit functions to detect the print inhibition command stored in the last bit. When the print inhibition command is detected, the signal detection circuit functions to preclude the transaction data stored in the corresponding memory address from being transferred to the printer system.