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avr单片机通过RS485在线程序升级，编译环境IAR,上位机程序使用VC6.0编写。(AVR microcontroller through the RS485 online upgrade program, the compiler environment IAR, the host computer program written in VC6.0.)

c语言通讯录源代码，功能一般，不够完善，很，简单适合，初学者可以看，我是为了打作业才上呢(c language directory source code, functional and not perfect, really, for a simple, beginners can see, I will work to fight on?)

STM32F103驱动12864液晶程序，很适合于初学者，希望对你有用(12864 STM32F103 driver program, it is suitable for beginners, I hope useful to you)

基于51单片机的自行车测速系统protues仿真(Based the 51 microcontroller bike velocimetry system protues simulation)

说明：  51单片机开发，AD转换模块 ，模数转换，高精度(51 MCU development, AD converter module, analog-to-digital conversion, high-precision)

AD转换资料，超全大量AD采集电压以及采集电流的方法！(AD conversion data, a large number of ultra-wide voltage and collected current AD acquisition method!)

MQ-7烟雾模块 DHT11模块 430单片机驱动 数字量 非模拟量 1602显示(MQ-7 DHT11 430F149 1602)

单片机DS18B20测温功能模块　DS18B20数字温度传感器接线方便，封装成后可应用于多种场合，如管道式，螺纹式，磁铁吸附式，不锈钢封装式，型号多种多样，有LTM8877，LTM8874等等。主要根据应用场合的不同而改变其外观。封装后的DS18B20可用于电缆沟测温，高炉水循环测温，锅炉测温，机房测温，农业大棚测温，洁净室测温，弹药库测温等各种非极限温度场合。耐磨耐碰，体积小，使用方便，封装形式多样，适用于各种狭小空间设备数字测温和控制领域。.(DS18B20 digital temperature sensor MCU DS18B20 temperature measurement function module wiring convenience, packaged as can be applied to a variety of occasions, such as pipes, threaded, magnets, stainless steel package, a variety of models, LTM8877, LTM8874 and so on. Main changes its appearance depending on the applications. Package after the DS18B20 temperature measurement, can be used in the cable trench blast furnace water cycle temperature measurement, boiler temperature measurement, room temperature measurement, the agriculture greenhouse temperature measurement, temperature measurement of a clean room, the temperature measurement of the ammunition depot various temperature extremes occasions. Resistant to wear and touch, small size, easy to use package forms, suitable for a variety of the narrow space equipment digital temperature measurement and control field. .)

This second edition cancels and replaces the first edition, ISO/IEC 9899:1990, as amended and corrected by ISO/IEC 9899/COR1:1994, ISO/IEC 9899/AMD1:1995, and ISO/IEC 9899/COR2:1996.

说明：  该源码实现51单片机之间符合modbus通信协议的通信(This code can achieve communications between MCS51 by modbus protocol. )