| 摘要 |
PURPOSE:To send a data without hindrance from a low-order computer to a high-order computer by providing a microcomputer controlling the transmission of a data in a data memory according to a transmission protocol stored in a ROM in response to a detection signal of a detection means. CONSTITUTION:When a serial data is sent from the low-order computer to an input port 1, the data is converted into a parallel data at an input port 1 and written in either of data memories 6,7. Then the address of data memories 6,7 is designated sequentially by the count output of any of count terms 8, 9 corresponding thereto. When the sending of a data by one block is finished, the data of the next block is stored in other data memories 6,7. On the other hand, a detection signal of the detection means 2 is inputted to a microcomputer 10 as an interruption signal to control the transmission of the data according to the transmission protocol stored in a ROM11. When the transmission is finished, the count means 8,9 are cleared for the provision of the next procedure.
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