| 摘要 |
A switching device for connecting four input devices and two auxiliary devices to a common output device is disclosed. A first 4-position 15-pole switch connects any one of four 15-pin input connectors to 15 common output lines in one-to-one correspondence. Two of these 15 inputs are routed through the first position of a second switch that has three positions and two poles. The second and third positions of the second switch are interconnected with two auxiliary input connectors, respectively, for accepting signals from the auxiliary devices instead of the first switch. A pair of output lines from the second switch is interconnected with the two remaining open pins of the output connector. As such, any one of the four input devices and either or neither of the auxiliary devices is switchable to the output device. |
