VIDEOTEX COMMUNICATION SYSTEM

PURPOSE:To improve the function of a videotex system by adding a keyboard simulation function to be controlled from a host computer to the side of terminals. CONSTITUTION:Plural videotex terminals 20 are connected to the host computer 10 through a telephone line 30. Each terminal 20 has the functions of an NAPLSS decoder A, an ASCII decoder B, a cession control C, and a device control D. The device control D has CRT, printer and keyboard controlling functions D1-D3 for controlling a CRT 21, a printer 22 and a keyboard 23 and a keyboard simulation function D4 for attaining the input (e.g. log-in input) from the terminal 20 by operating the computer 10 even when input from the keyboard 23 is not executed.