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For testing and controlling and decoding voltage signal outputed from scanning device of bar code testing instrument, the main tasks of this research ...展开
work are to develop hardware and software of testing and controlling and decoding.The paper discusses comprehensively the part of hardware's design included input interface circuit、singl - chip microcomputer process system、analog to digital and digital to analog converter.The paper discusses pregrams design of testing and decode in detail. With the help of advanced program design methods,bar code decode prograrms such as EAN. 收起
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