crc校验源码，可供C51程序员参考，我目前测试用的32位CRC程序

OCMJ 4X8 （内带中文字库）LCD显示代码，包括ASC2码，和中文显示-OCMJ 4X8 (within the band Chinese font) LCD display code, including code ASC2, and Chinese show

1线通讯协议的c51例子程序, 已调试通过-One-line communication protocol procedure example of the C51 has been debugging through

基于51单片机动态显示数码管,及中断说明等-51 MCU-based dynamic display of digital control

ht9200B C51编程子程序和HT9200A和资料-ht9200B C51 programming routines and information and HT9200A

比较经典的独立键盘及时扫描方法。51单片机中运行-Comparison of classic and timely independent keyboard scanning method. 51 Single-chip running

介绍了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，同时给出了其编程方法和程序代码．-Introduced the basic principles of liquid crystal display module and its technical characteristics, and MCU interface to the specific circuit, at the same time gives the methods and procedures of its programming code.

An "improved" inductance / capacitance meter Actually, it works much the same as the originalIt differs from the original in that: A 16F628 PIC is used. This has internal comparator, which means the LM311 is no longer needed.Software calibration is used. The finished meter can be calibrated against "any" accurate capacitor within the range 100pF to about 10000pF -An "improved" inductance/capacitance meter Actually, it works much the same as the originalIt differs from the original in that: A 16F628 PIC is used. This has internal comparator, which means the LM311 is no longer needed.Software calibration is used. The finished meter can be calibrated against "any" accurate capacitor within the range 100pF to about 10000pF

MEGA16 驱动开发板上的继电器,按不同的独立键，交替改变继电器开关状态-mega16 drive PWM

单片机 Keil＋proteus 并行口设计数字键盘实验 要求：掌握动态显示、动态扫描键盘的工作原理及硬、软件的设计、调试方法 掌握80C51接口硬件电路设计方法及软件编程方法 了解80C51外部中断的使用和编程方法 实验题目：并行口实现数字0~9、A~F、L、U、P、n总共20个键盘，将按键的结果用7段数码管显示出来。-Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.

MS-51高级应用程序库，一共5编，欢迎各位朋友下载，分享-Library