| 摘要 |
PURPOSE: To bring sections among circuits to a nonconductive state selectively, and to set different codes simply at every equipment by connecting the sections among the circuits by the through-holes of a printed board and selectively removing conductive layers in the through-holes. CONSTITUTION: The hole of a through-hole 11 for setting a code is cut as a guide from the top face section 11a of the through-hole 11 for setting the code corresponding to a specified resistor by the edge 41 of a drill 4. When parts of the through-holes 11 for setting the code are removed by cutting, the through- holes 11 for setting the code corresponding to resistors R0, R3 are brought to an electrically insulated state to the top face sections 11a and underside sections 11b. The code of a logic circuit corresponding to the separated through- holes 11 for setting the code is set at H (high potential) and the code of a logic corresponding to the through-holes 11 not separated for setting the code at L (low potential), thus simply setting different codes at every equipment. |
