| 摘要 |
<p>PROBLEM TO BE SOLVED: To exactly package a board for expansion on a designated connector without referring to a manual by successively turning on the LED lamps of preferential connectors in the case of packaging the board. SOLUTION: When the number of packaging boards for expansion is designated from an input device 3, the information is sent to a 1st controlling part 4 through a signal line 107 to decide the priority order of connectors and stored in a memory 6 through a signal line 108. A 2nd controlling part 7 turns on a LED lamp 2 provided in a connector 1 through signal lines 105 and 106. When the board is packaged on the connector 21, terminals 101 and 102 become conductive and their signals sent to the part 7 through signal lines 103 and 104. When the part 7 receives the signals to turn off the lamp 2 and turns on the LED lamp 2a of a 2nd preferential connector at the same time. When the board is half inserted, the terminals 101 and 102 become nonconductive and the lamp 2 is not turned off.</p> |
