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文件名称:lCD-51seriesprogram
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51单片机的P0.0/AD0-P0.7/AD7端口接数码管的a-h端,8位数码管的S1-S8通过74LS138译码器的Y0-Y7来控制选通每个数码管的位选端。AT89S51单片机的P1.0-P1.2控制74LS138的A,B,C端子。在8位数码管上从右向左循环显示“12345678”。能够比较平滑地看到拉幕的效果。-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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