设计一个汽车尾灯控制电路，要求能根据汽车运行情况来控制汽车尾部左右两侧各有三个指示灯（用发光二极管模拟）。

1.　　汽车正常运行时指示灯全灭。

2.　　右转弯时，右侧3个指示灯按右循环点亮。

3.　　左转弯时，左侧3个指示灯按左循环点亮。

4. 临时刹车时所有指示灯同时闪烁。-The design of a car taillight control circuit, according to automotive requirements to control the operation of motor vehicles around the rear of the three lights on each side (light-emitting diodes with simulation). 1. When the normal operation of light motor vehicle body. 2. And turn right, the right of three right-cycle indicator light. 3. Left turn, the left side of the left circle of three indicator lights. 4. All temporary brake lights flashing at the same time.