寻迹小车 在历届全国大学生电子设计竞赛中多次出现了集光、机、电于一体的简易智能小车题目。笔者通过论证、比较、实验之后,制作出了简易小车的寻迹电路系统。-Tracing cars in successive national undergraduate electronic design contest of multiple occurrences of a set of optical, mechanical and electrical in the integration of simpl