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- SCM
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[WORD]
- File Size:
- 63kb
- Update:
- 2012-11-26
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- wenming0511
Description: 51 SCM P0.0/AD0-P0.7/AD7 port access digital tube a-h end of the 8-bit digital tube S1-S8 through the 74LS138 decoder Y0-Y7 to control the strobe tube for each digital Choice of side. AT89S51 MCU P1.0-P1.2 control 74LS138' s A, B, C terminal. In the 8-bit digital tube display from right to left circle, " 12345678." Able to compare the smooth Curtain to see results.
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拉幕式数码显示技术21.doc
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