| 摘要 |
PURPOSE:To attain an efficient group data input, by providing a reference signal generating circuit in one of plural data input devices and controlling the order of data transmission from data input devices by the reference signal from this circuit. CONSTITUTION:Independent data input devices 301-304 are connected to a connection signal line 31 to transmit and receive data signals mutually. An operation controller 21 controls an external storage device 26 through a keyboard 22, a display 23, and an external storage device mechanism 25 in accordance with procedures of the program stored in a main storage device 24. Each data input device can transmit data to an interface signal line 29 through an interface circuit 27, and the order of data transmission is controlled by a reference signal generating circuit 28. |
