Electronic cash register system

Details Electronic cash register system Electronic cash register system

G - Physics

06

F

354/34

G06F 11/30 (2006.01) G07G 1/14 (2006.01) H04L 1/14 (2006.01)

Patent

CA 1281415

ABSTRACT OF THE DISCLOSURE A data error-checking system including a transmitting cash register and a receiving cash register connected to each other in series in a loop formation. The operation of the system includes serial transfer of data from the transmitting cash register to the receiving cash register simultaneous with data transfer from the receiving cash register to the transmitting cash register, and comparison of the data transferred from the transmitting cash register with the corresponding data transferred back from the receiving cash register to the transmitting cash register.

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