能实现多功能。既可做倒计时秒表,又可进行定时，还可以通过扩展完成其他功能，而且功能的相互转换也十分简单...

实验学习型电子钟包括红外线控制密码da控制led亮度ad转换语音转换闹铃-Experimental study electronic bell, including infra-red control password da control led brightness ad-speech converter alarm

128×64图形液晶显示程序，采用直接方式的硬件连接方式，可实现图形，文字的显示-128 64 LCD graphics procedures, the use of direct methods of connectivity hardware, graphics, text display

LPC2103的第二个实验：流水灯+按键，用proteus7仿真，C语言代码，在Keil3中编译，文件内已有完整的工程和仿真图了。-The second experiment LPC2103: water lamp+ button, and proteus7 simulation, C language code, compiled at Keil3 in the paper that has a complete map of the engineering and simulation.

nrf905通信 基于rs232-nrf905 based RS232 communication

51单片机的模拟I2C总线接口函数，附带完整注释。-51 microcontroller simulation I2C bus interface function, fringe integrity Notes.

keilC51编写的，配合单片机AT89C51的液晶模块PG12864的驱动显示程序！-keilC51 prepared with AT89C51 single-chip LCD driver module PG12864 display program!

西门子无线手机模块AT COMMAND 用于无线数传（C51MCU）-Siemens wireless phones COMMAND AT module for wireless data-transmission (C51MCU)

200W LED照明系统的电源设计 200W LED照明系统的电源设计-200W LED lighting system power supply design 200W LED lighting system power supply design 200W LED lighting system power supply design,

IO 口模拟232通讯程序 使用两种方式的C程序 占用定时器0 -IO simulated 232 communications programs use two forms of occupation C program timer 0

1602液晶显示程序，51用的开发程序，适合大部分1602液晶，开发东西时稍加改动就可以用。-1602display