| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit board 1 which is reduced in size and cost due to the reduction in size. SOLUTION: The circuit board 1 is equipped with a common land 3, connected to a wiring pattern 2, and three selection lands 4. The common land 3 and the three selection lands 4 are arranged so as to be located at the corners of a square; a chip 7 is set so as to be selectively connected to one of the common land 3 and the three selection lands 4, so that the common land 3 can be made common by one; and the four lands 3 and 4 are arranged in a square shape, so that an area occupied by the common land 3 and the selection lands 4 can be made small. COPYRIGHT: (C)2007,JPO&INPIT
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