| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board capable of mounting, at the same location, devices which are used in identical parts in a circuit diagram and have different solder connection positions while having a compatibility with each other in electrical specifications. SOLUTION: A printed wiring board 100 has a wiring pattern 3 formed according to a predetermined circuit thereon and also has spaces 2A, 2B in which two sorts of SRAMs having different lead positions and nearly equal electrical specifications can be mounted at the same location. First and second land rows 31, 32 connected to leads of the two sorts of SRAMs are formed in the spaces 2A, 2B; and can be mounted by selecting any of the two sorts of SRAMs. COPYRIGHT: (C)2006,JPO&NCIPI
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