| 摘要 |
<p>PURPOSE:To make it sufficient to only providing an installing transmission lines of the necessary minimum between a PC which has been provided in a distant place and a CRT terminal equipment, by executing a data transmission between the PC which has been designated from a PC operation designating switch and the CRT terminal equipment. CONSTITUTION:When a data is sent out of a light pen of a CRT terminal equipment, its data is inputted to a PC11 from the fifth multiplexer MPX5, a subcontroller SUB1, the third multiplexer MPX3, a transmission line CA1, and the first multiplexer MPX1. The light pen data which has been inputted to the PC11 is processed therein, and an output signal of its result is supplied to the CRT terminal equipment. Also, the PC11 is controlled be an external supplied from an input 1, as well, and the data of that time is supplied to the CRT terminal equipment in the same way. In this way, even if a distance between the CRT terminal equipment and plural PC11-PCn1 is separated, the data can be sent and received by the quantity of transmission lines of the necessary minimum.</p> |
