dt.STM32Pfreemodbus

单片微型计算机简称单片机，是典型的嵌入式微控制器（Microcontroller Unit）， 单片机芯片 常用英文字母的缩写MCU表示单片机，单片机又称单片微控制器，它不是完成某一个逻辑功能的芯片，而是把一个计算机系统集成到一个芯片上。(Microcontroller chip microcomputer referred to, is a typical embedded microcontroller (Microcontroller Unit),     Single chip Commonly used letters of the abbreviation indicates MCU microcontroller, microcontroller, also known as single-chip microcontroller, it is not complete a certain logic functions of the chip, but to a computer system integrated into a single chip.)

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 } )

本源代码用于使用ATMEL公司的AT89C51芯片实现硬件mp3，其中包括有特色的mp3解码算法和U盘功能读写程序。(Source code for use ATMEL Corporation AT89C51 chip hardware mp3, have characteristics which include mp3 decoding algorithm and U disk function to read and write procedures.)

模数转换ADC0832，基于51单片机的c语言程序(Analog to digital converter ADC0832, based on 51 MCU c language program)

使用51单片机和18B20采集温度，并用数码管显示(Use 51 And 18B20 collecting temperature and with digital display)

ov7670 datasheet，ov7670摄像头数据手册(this is the ov7670 datasheet)

超再生遥控-遥控步进电机正反转AB的程序(Superregeneration Remote- remote control stepper motor program AB)

这是一个自制万年历的显示程序。能显示温度日期时间等。。。。。。(This is a homemade calendar display program. Can display the temperature of the date and time. . . . . .)

智能电网综述。提出新的概念和研究方法。及其对目前传统电网的颠覆。(smart power grids。)

COM reference for farPoint Spread 7.0