Input/output yunitsuto null of shi - kensukontoro -

摘要

PURPOSE:To select an arbitrary output device without enlarging the whole of a device by providing a selecting switch to change over and control arbitrarily and selectively either of an LCD output connector and a CRT output connector. CONSTITUTION:From a terminal 18 through a resistance 17 to a controller 13, an externally fitted selecting switch 19 is connected, and by executing the on/off control of the selecting switch 19, the controller 13 outputs selectively the signal to either of an LCD output connector 4 or CRT output connectors 5 and 6. For this reason, in a signal card formed thin input output unit 2, at least a single keyboard input connector 3 and three output connectors 4-6 exist in parallel, and plural output connectors 4-6 can change over arbitrarily either of them by the selecting switch 19. Thus, while the device is a thin and small device, an output displaying device can be arbitrarily selected.