这里我给大家提供一份寻迹小车的资料。单片机使用的是AT89C2051，马达驱动用L293D；传感器组使用4只一体化反射式光电传感器，使用四运放LM324作传感器组的信号放大。下面有小车的实物图和详细电路图。-Here, I give you to provide a tracing car information. Microcontroller using the AT89C2051, motor-driven with L293D　sensor group using four integrated reflective photoelectric sensor, using four LM324 op amp signal amplification for sensor group. Here are the physical map and detailed car circuit.