| 摘要 |
PURPOSE: A printed circuit board is provided to utilize effectively an area of a surface and reduce an ingredients cost by minimizing a mounting area. CONSTITUTION: A pad portion(30) includes a common pad(31) having one of plural SMDs(20a,20b) and plural proper pads(33a,33b). The common pad(31) is arranged between the proper pads(33a,33b) of a printed circuit board(10). The common pad(31) is commonly connected to one of the SMDs(20a,20b). The proper pads(33a,33b) are selectively connected to one of the SMDs(20a,20b). The printed circuit board(10) outputs the power of 5V when one of the SMDs(20a,20b) is connected to the proper pad(33a) of 5V. The printed circuit board(10) outputs the power of 3.3V when one of the SMDs(20a,20b) is connected to the proper pad(33b) of 3.3V.
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