Importance

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Abstract

Smooth transaction at an ECR is facilitated. An ECR includes a customer number counter and a lamp which are connected to each other by a signal line hence which are controllable by a CPU. In a RAM of the ECR, memories and a total customer number memory are disposed. In the memory, a predetermined value which serves as a reference for judging the crowdedness of the ECR is set. A difference between a value which is obtained at the memory by adding up and storing the sum of the numbers of customers waiting in front of the ECR which are read from the customer number counter and a value which is obtained at the total customer number memory in which values obtained at the memory which stores the number of customers for one transaction are serially added up and stored is compared with a value which is obtained at the memory. If the difference is smaller than the value at the memory, the CPU determines that the ECR is not crowded and turns on the lamp. If the difference is larger than the value at the memory, the CPU determines that the ECR is crowded and turns off the lamp.

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First Claim