PL-51单片机学习板实例程序\实例程序\C语言\025-蜂鸣器演奏消防车的报警声音\喇叭演奏消防车的报警声音-PL-51 microcontroller board instance learning program \ instance procedure \ C language \ 025- fire alarm buzzer sounds playing \ fire alarm sound speaker play

利用单片机P1端口控制6个交通信号灯，并使用定时/计数器T0作定时，实现交通信号灯控制。 在马路的十字路过东西南北各设置红、黄、绿3种信号灯。由P1.0～P1.2控制南北方向，其中P1.0为红灯，P1.1为黄灯，P1.2为绿灯。P1.3～P1.5控制东西方向，其中P1.3为红灯，P1.4为黄灯，P1.5为绿灯。 -P1 port single-chip computer control of six traffic lights, and use the timer/counter T0

单片机控制，能完成小车自动循迹（黑色路径）、避障等功能。-The paper based on single chip microcomputer STC89C52 application, through C programming language, makes the car have followed the trace, obstacle avoidance, orbiting objects, and other functions.

单片机控制交通灯原理图和程序代码，可实现在数码管上轮流显示信号交叉口东西南北四个方向红绿灯-MCU control traffic lights schematics and program code can be realized in the digital tube display signal turns East and West four directions intersection traffic lights