| 摘要 |
A data exchanging system, for exchanging data between electrical devices, such as, an automatic vending machine and a data collecting device, is disclosed. Each device includes a data delivery section for converting data into a signal resembling the light reflected by a bar code when the bar code is optically scanned, a data receiving section for receiving data in the form of optically coded signals, and a control device for controlling the operation of the data delivery section and decoding data provided from the data receiving section. |
