a PWM duty cycle output procedures EM78P458 applications through debugging

好东西跟大家分享，这是一个红外遥控学习的C程序。

说明：《AT89S51单片机试验》的仿真-Description: AT89S51 Single-chip test Simulation

ST7529为一32级灰度液晶显示屏驱动芯片，功能强大，耗电小．本程序为STC89LE58RC驱动ST7529整个工程包，程序的编绎环境为KEIL，本人保证程序绝对完整．-ST7529 is a 32 gray-scale LCD driver chip, powerful, small power consumption. This procedure for STC89LE58RC drive the whole project package ST7529, procedures for the provision Sounds of environmental KEIL, my absolute integrity assurance procedures.

急救车与交通灯）（1）南北与东西方向，每个方面由红黄绿三个灯控制（2）南北向：　红（30秒），黄（5秒），绿（25秒）　　　东西向： 红（35秒），黄（5秒），绿（25秒）　　　上述基本参数可以根据实际情况自行调整，灯的变化规律与实际路口规律相同，绿灯在最后5秒钟时，黄灯亮，然后红灯亮，不允许两个方面同时亮绿灯。（3）绿灯的时间显示在数码管上进行显示。（4）可以通过一个开关控制，当开关信号为0时，整个交通灯全灭提高要求：（1）设计一个紧急控制开关信号，当紧急开关信号为1时，两个方向的灯全为红灯。紧急开关撤消后，按照开关按下之前的状态继续运行（其参数要保存）。（2）设计一个夜间行车开关，当开关按下后，两个方向都只有黄灯闪烁，其它灯熄灭。（3）设计两个方向的亮时时间可调。-emergency vehicles and traffic lights) (1) North and South and east-west direction, each with three yellow-green from red lights control (2) to the north and south : red (30 seconds), yellow (5 seconds), Green (25 seconds) to things : red (35 seconds), yellow (5 seconds) Green (25 seconds) above basic parameters can be adjusted to the actual situation, the light changes with the actual law of the same intersection, the green light in the final five seconds, the yellow light is on, and then a red light, bright, not two fronts simultaneously bright green. (3) the green light at the time displayed on the digital display control. (4) can be controlled by a

以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出-to compare A match reached the turn at the high output and low-level maintenance time into their methods to achieve constant PWM Output

介绍了一种基于MCS251 系列单片机的温度测控电路。可对外界温度进行测 量、误差修正、判定传感器故障与高温报警, 并具有键盘控制和警情通讯显示功能。-VERY GOOD

通过单片机对HT9170进行控制，实现对音频信号的解码。-Through the single-chip microcomputer to control HT9170, realize decoding of audio signals.

c51用于lcd 显示,键盘检测，I2c总线程序范例 -decoder for the LCD display, keyboard detection procedures example I2c Bus

用C51单片机做一个温度计，同时用Proteus做的仿真 -C51 single-chip microcomputer to do with a thermometer, at the same time to do the simulation with Proteus

AVR单片机应用系统开发典型实例_3 -AVR Singlechip classic example of application systems development _3