Electronic cash register with timekeeper

Claim 1

A timekeeper equipped electronic cash register comprising: a time count circuit for outputting a time count signal obtained by frequency dividing a reference pulse signal generated at a predetermined cycle; a first memory means coupled to the time count circuit to store in a time count sequence date data at least including month and day units, said date data being sequentially updated for each day on a basis of the time count signal from the time count circuit; a central processing unit coupled to the first memory means; a keyboard coupled to said central processing unit and having a control switch means settable for designating various modes including a registration mode, setting mode and settlement mode; data input keys for inputting data including amount data and date data; a date setting key for causing the transferring of the date data to the first memory means via the central processing unit; and a receipt sheet issuing key for causing the issuing of a receipt sheet when a transaction is completed for a customer; a printing device coupled to the central processing unit to print sales amount, date data, etc., on the receipt sheet; and mode switch means coupled to the keyboard and settable to selectively designate different input sequences of date data inputted by the data input keys and different printing output sequences of the date data in the printing device, in which said central processing unit comprises: first converting means for causing date data comprised of a plurality of date units inputted by the operation of the data input keys to be converted to date data arranged in a time count sequence on the basis of the setting of the mode switch means when the date setting key is operated with the control switch means set in a setting mode; second memory means for storing date data converted by the first converting means in the time count sequence; writing means for causing the time-sequenced date data stored in the second memory means to be written into the first memory means; reading means for reading out the date data in the first memory means when the receipt sheet issuing key is operated with the control switch means set at least to the registration mode; a second converting means for causing the read-out time-sequenced data to be converted to date data whose date units are arranged in the seuence designated by the setting of the mode switch means, and for causing insertion of a marker code between said date units thereof so that a separation is provided on the receipt sheet between said date units; and means for causing date data including the marker code to be delivered as printing data to the printing device.