| 摘要 |
PURPOSE:To simplify and accelerate the operation of a data terminal device by connecting a keyboard containing a data operation part for transmission of data on services to a computer center together with a data terminal device containing a control part and therefore securing the automatic input of both preparatory and end procedures. CONSTITUTION:A computer center 11 is connected to an acoustic coupler 13 of a data terminal device 10 via a communication circuit 12. Then a CPU19, a ROM 20, a RAM21, a character font ROM23 and a code number setting circuit 24 are connected to an address bus 26, a data bus 27 and a control bus 25 of the device 10 respectively. Furthermore interfaces 18 and 16 connected to a keyboard 17 and a printer 15 are connected to buses 25-27 respectively. Then the data on services are transmitted to the center 11 through operation of the keyboard 17 and the control of a control part, and both preparatory and end procedures are supplied automatically. This simplifies and accelerates the operation of the device 10.
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