数码管LED显示 PORT6输出动作的控制，而且外部接有一推动8个七段显示器的电路。编写一程序在8个七段显示器上轮流显示1,2,3,4,5,6,7,8。 -Digital tube LED display output PORT6 movement control, and external access there is a push paragraph 8 of the circuit monitors. The development of a procedure in parag