Description: When you press the button SW1, eight light-emitting diodes (L1-L8) showed a dark spot clockwise flow when you press the SW2 button on a clockwise direction highlights flow respectively press SW3, SW4 when the button above the flow in the opposite direction but the same effect no key is pressed, the program resumes the initial state, it stops running.
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流水灯 开关方式.doc
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