| 摘要 |
The switching matrix apparatus is provided with a plurality of relay switches for opening and closing the electrical connections between a plurality of input terminals and a plurality of output terminals, and a display unit in which a plurality of light-emitting portions are arranged in a matrix in correspondence with the respective relay switches and in which indicators indicating the positions of the light-emitting portions in at least multiple columns and rows are displayed along at least two sides of the light-emitting portions arranged in a matrix. In order to facilitate confirmation of the position of a light-emitting portion that is about to be selected or has been selected with a light pen on the display unit, light is emitted by at least one other light-emitting portion relating to the light-emitting portion that is about to be selected or has been selected.
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