用AT89S51单片机根据转弯开关的状态控制相应的转弯灯。(The corresponding turning light is controlled by the state of the AT89S51 single chip microcomputer according to the state of the turning switch. When the left switch is switched on, the left light shines; the right light shines when the right switch is switched on. All the lights are on time and the middle light is long. The flash time is 0.5 seconds and the lighting time is 1 seconds.)