| 摘要 |
<p>The circuit board is made from a pressed, cast or injection moulded material. The circuit board has a substantially plane configuration (20, 30, 32, 34, 36, 38, 50, 60) and it is used for fastening of electronic components which form discrete units resting on the surface of the board. It carries a pattern of conducting material connecting the components in the required circuit. At the edges of the circuit board there are upturned flanges (14, 32) with holes for mounting of the board. Some of the holes may be elongated to increase tolerances.</p> |
