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基于单片机的一些基础应用 和硬件设计以及综合设计(89c51Integrated application hardware design)

利用ULN2003A进行驱动，产生PWM波，里边有照片，可供参考，通过本例程了解PWM 的基本原理和使用 (#include <reg52.h> unsigned char timer1 sbit PWM=P1^2 void system_Ini() { TMOD|= 0x11 //PWM TH1 = 0xfe //11.0592 TL1 = 0x33 TR1 = 1 IE =0x8A } main() { system_Ini() while(1) { if(timer1>100) timer1=0 if(timer1<30) PWM=0 else PWM=1 } )

对矩阵键盘的程序编写，详细地讲述了如何扫描键盘的输入！(The matrix keyboard programming, detailed tells the story of how to scan the keyboard input!)

中英文电子词典，可以联网和在线进行翻译。(English electronic dictionary, can be networked and online.)

说明：  读写SD卡的头文件，MMC，不含fat文件系统。(Read and write SD card.)

这是一个用于工控的上位机系统，可以实时监测温度，露点，湿度。用户可以根据具体情况设定报警点，当达到报警点，系统通过邮件发送报警信息给用户。(This is a PC for industrial control of the system, can be real-time monitoring of temperature, dew point and humidity. Users can set alarms based on specific circumstances, when the police reached, the system, through e-mail warning messages to users.)

at89c51snd1单片机SCMM的mp3播放程序源码 (SCMM at89c51snd1 microcontroller mp3 player source code)

基于AT89C51单片机的出租车计价器的程序设计(AT89C51 microcontroller Taximeter-based program design)

基于430的DC_DC变化，采用PID控制，调节PWM的输出占公比，从而反馈调节输出电压(Based on 430 DC_DC change, using PID control, adjust the PWM output accounted common ratio, thus regulating the output voltage feedback)

PIC18F2550 sorts of applications made ​ ​ with this beautiful project with 3 source code has comes up all the computer software and computer-related pic assembly software is written in Visual Basic 6