| 摘要 |
<p>PURPOSE:To automatically set up the identification(ID) number of a circuit card without executing, manual operation while holding the generality of a shelf device to be attained by a convensional device as it is. CONSTITUTION:A shelf l for loading plural circuit cards 3 to 5 is provided on a backboard IA, ID number setting connectors 3F to 5F are disposed on the cards 3 to 5 and wirings 13, 14, 17 with required patterns for connecting the connectors 3F to 5F are formed on the back board 1A. When the cards 3 to 5 are loaded to the backboard 1A, the 1D numbers of the cars 3 to 5 are automatically set up by the co-operation of the connectors 3F to 5F and the wirings 13, 14, 17.</p> |
