| 摘要 |
PURPOSE:To obtain a data equivalent controlling system of high speed processing without interposing a host computer by executing equivalent processing of the contents of data files of a master terminal controller and a slave terminal controller, by the master terminal controller. CONSTITUTION:A master terminal controller 3 and a bus BUS2 of a slave terminal controller 4 are connected by a bus BUS3. The master terminal controller 3 inputs successively commodity sale information which is sent from a POS terminal 1 through a switching device 2, executes prescribed summing-up processing, also sends it to a slave terminal controller 4 side through the bus BUS3, and executes equivalent processing. The slave terminal controller 4 stores temporarily in a pool area 5 data for double write which is sent through the BUS3, and executes the same summing-up processing by reading out said data. The master and slave terminal controllers 3, 4 register a result of the summing-up processing in a file of a magnetic disk, etc. |
