Proteus in the simulation and LCD HDM32GS12b source.

51的4*4键盘驱动当按键按下时返回一个值，且只在按下键时返回一次该值，之后返回0；无按键时返回0；包含消抖功能，在键盘的下降沿触发。 基于keil平台-51 4* 4 keyboard driver when the button is depressed to return a value, and press the button only once the value to return, followed by return 0 no keys to return 0 contains extinction Buffeting function, the falling edge trigger at the keyboard. Keil-based platform

单片机与键盘接口程序，C代码，简单好实用。-SCM and the keyboard interface program, C code, a simple and practical good.

51单片机定时器程序编写实例，对于初学者很有帮助。-51 Single-chip timer programming examples, very helpful for beginners.

mega8数码管电子钟程序，用32768晶振，很准确。-mega8 electronic clock.

两位数码管动态显示，两个按钮可使数码管数字调大调小-Two digital tube dynamic display, two buttons will enable the digital tube digital transfer major small

51运行的实时操作系统，对原代码进行了详细描述。

P89LPC900系列单片机 P89LPC922单片机的ISP下载功能的相关方法-P89LPC900 MCU P89LPC922 MCU ISP download the relevant methods

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

AT24C64 Keil C 代码-AT24C64 Keil C code

本程序通过对研祥EVOC_PCL813高速A/D数据采集卡的驱动，采集40路模拟通道的数据，并以数据文件的形式存储在硬盘上，生成文本文件-through the right procedures EVOC EVOC_PCL813 high-speed A/D data acquisition card drive, collecting 40 analog channel data and data in the form of documents stored on the hard drive, generating text files