| 摘要 |
The device of this invention includes a first revolving board having several indents in its circumference, a second revolving board having indents corresponding to those in the first revolving board, a photo sensor operated by the indents of the second revolving board, and a control circuit. The control circuit, upon receipt of output of the photo sensor, is operated to pause the stepping motor, turn it in the reverse direction up to a certain angle, and then again turn it in the original direction, so as to make a single core wire of a cable inserted precisely in an indent of the first revolving board.
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