| 摘要 |
1343964 Two part couplings STANDARD TELEPHONES & CABLE Ltd 25 Nov 1971 54788/71 Heading H2A A printed circuit board 3 is provided with a polarizing device 4, with projecting pins 5. The mating connector 1, has a polarizing device 6 with pins (not shown), each of which may be located in groove 7 aligned with one of the pins 5, when the board is in position for insertion. A selection of pins is removed from the board, and a complementary selection from the connector.
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