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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 } )

温湿度串口检测程序，实现对数据的读取和检测(Temperature and Humidity Serial Port Detection Program for Data Reading and Detection)

从数据挖掘的应用出发,以电力、航空、医疗、互联网、生产制造以及公共服务等行业...python数据分析与挖掘实战 源码 代码 配套资源 立即下载 上传者: ...(fsadasdassfafasfasdasdsafasfasdasdasdasfasdasdas)

说明：  在线论文相似度以及重复率的非法抄袭的自动检测(Similarity and repetition rate online paper copy of the automatic detection of illegal)

将BAL网站的BA算法的输入数据转换为sba算法可用的相机和点分开的数据文件(The BAL website BA algorithm input data into sba algorithm available camera and point separate data files)

以定时的方式接收下位机传送的多帧数据，接收准确，实时性很强(In time to receive the next crew of the multi-frame data transmission, receive accurate, real-time strong)

asp.net 很不错的软件 一款适合想要远程教育的人们使用 (asp.net a very good software for people who want to use distance education)

介绍了perl语言，不错，感兴趣的可以(Introduction of the perl language, it is true that interest can be)

Termometr read pc com post atmega8 usart

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!)