i2c总线协议，很好的协议

电子密码锁程序，两键输入，其中一个键累加，另一个键确认。密码正确锁打开（开锁指示灯亮）；密码错误锁关闭（关锁指示灯亮）；连续错三次则锁定键盘8秒并发出报警声。-Electronic code lock procedure, the two key input, one key additive, and the other button to confirm. The correct password to open lock (unlock indicator light) password error lock closure (Kuan-lock indicator light) consecutive wrong then lock the keyboard three times and issued eight seconds alarm sound.

i2c总线eeprom读写程序 可以读些从21c01--24c512的i2c总线eeprom芯片-i2c bus EEPROM read and write procedures can read more from 21c01-- the i2c bus 24c512 chip EEPROM

蛇形跑马灯加延时一般的程序-Marquee plus delay a routine procedure. . . . . . . . . . . . . . . . .

给公司写的点焊机测试程序，用于产生4路PWM波-Write to the company" s spot welder testing procedures used to produce 4-channel PWM wave

计算光线传输过程中光脉冲的傅里叶变换及反变换算法-Fourier Transformation and Inverse Fourier Transformation

看门狗的使用方法例程（C语言）-watchdog on the use routines (C language)

x5045的c源程序，绝对使用通过，放心使用-x5045 source, the absolute use, easy-to-use!

基于AT89C52的单片机4X4键盘原理图，可用于小系统板-Based on AT89C52 microcontroller 4X4 keyboard schematics, can be used for a small system board

现场总线PROFIBUS技术发展现状.rar-Profibus fieldbus technology development status. Rar

AVR单片机M16L绝对可以用的4*4键盘程序,附连接图.-AVR Singlechip M16L can definitely use 4* 4 keyboard procedures, attached connection diagram.