| 摘要 |
PROBLEM TO BE SOLVED: To design a new function device without being limited by the specification of a main controller by using a storage medium, etc. for a main controlling part, connecting a sub controller whose programs can easily be rewritten and connecting a new function device realizing a new function to the sub controller. SOLUTION: A sub controller 30 is operated by a program stored in a storage device 31 or a storage medium 50, controls connected electronic money processor 41, portable terminal device 42 and new function device 43 and operates as a device realizing one function to a main controller 10. The controller 10 transmits a signal to the controller 30. The controller 30 receiving the signal transmits the signal to device 43, and the device 43 performs prescribed processing when it receives the signal and returns the signal to the controller 30. Subsequently, the controller 30 exchanges a signal with the device 43 as necessary and returns the results as a signal to the controller 10.
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