通过单片机对HT9200进行控制访问，实现电话的DTMF拨号功能

_传感器的理论与设计基础及其应用.详细介绍了各种常用传感器的特性与基本的应用-_ sensor design and the theory and its application. A detailed description of the various sensors used with the basic characteristics of the application

12864 LCD万年历芯片 驱动芯片KS0108-12864 LCD Driver IC chip calendar KS0108

89c52编写智能化开关电源设计，带A/D,D/A识别全数字开关电源程序。-89c52 prepare intelligent switching power supply design, with A/D, D/A to identify an all-digital switching power supply procedures.

IIC协议读取24C02芯片的一些标准驱动函数-IIC protocol to read some of the standard 24C02 chip-driven functions

c8051f340 USB传输 固件驱动， c8051f340 USB传输 固件驱动，-transmission c8051f340 USB drive firmware, c8051f340 USB transmission firmware-driven,

24系列eeprom的读写程序，绝对经典，只要根据自己需要改一改就行，采用模拟IIC总线的方式-24 Series EEPROM reading and writing process, an absolute classic, as long as the need to simply on the basis of their own line, using simulation methods IIC Bus

根据液晶显示模块基本原理及其技术特性，与单片机的进行接口的具体电路，本文提供了HD44780的调试程序代码．-According to the basic principles of liquid crystal display module and its technical characteristics, and MCU interface to the specific circuit, this article provides a HD44780 debugging program code.

USB接口芯片 FT245的ARM驱动源程序-USB interface of the ARM chip FT245 driver source

AVR简单的串口程序，适合初学者学习，可以直接应用-AVR simple serial program, suitable for beginners to learn, can be applied directly

PIC16F877应用的AD转换主程序 并可以通过LCD显示-PIC16F877 applications AD conversion by the main program and LCD display