设计一个八层楼房自动电梯控制器，用八个 LED显示电梯行进过程，并有数码管显示电梯当前所在楼层位置，在每层电梯入口处设有请求按钮开关，请求按钮按下则相应楼层的LED 亮。 -Design a controller, eight-story buildings, escalators, moving elevator with eight LED display process, and a digital display where the floor lift the current location of the entrance at each elevator button switch with a request, the request button is pressed the corresponding floor LED light.