Description: AT89S51 microcontroller P0.0/AD0-P0.7/AD7 port with access to a-h digital side, 8-bit digital control of the S1-S8 through the 74LS138 decoder Y0-Y7 to control each LED strobe The bit select. AT89S51 MCU P1.0-P1.2 control 74LS138 s A, B, C terminal. In the 8-bit digital displays on the loop from right to left "12345678." Able to compare to see Curtain smooth results.
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拉幕式.c
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