Cash checking read operation in an electronic cash register

An electronic cash register comprising:

• a main housing for said electronic cash register;
• a drawer case secured to said main housing for containing cash received from customers;
• a keyboard panel disposed on said main housing, said keyboard panel including:
• numeral keys for introducing numeral data;
• function keys for introducing function identifying signals;
• and
• mode selection switch means for selecting a desired operation mode of said electronic cash register from a normal registration mode, a read mode and a reset mode;
• a central processor unit for controlling the operation of said electronic cash register;
• a read only memory for storing various programs for controlling the operation of said electronic cash register in said normal registration mode, read mode and reset mode, said programs stored in said read only memory being applied to said central processor unit for controlling the operation of said electronic cash register;
• a main memory for storing transaction data introduced from said keyboard panel, said main memory including an accumulation memory section for storing cash in drawer data registered into said electronic cash register;
• a printer unit for printing out the transaction data onto a receipt slip and/or a journal paper;
• and
• a read operation control system for controlling the read operation in said read mode, said read operation control system comprising:
• print control system for printing out the transaction data stored in said main memory through the use of said printer unit;
• and
• means for prohibiting the operation of said print control system before the cash amount contained in said drawer case is manually introduced into said central processor unit from said numeral keys in the read mode.