measure coin used 89c52, which use two Timers

使用EM78P468单片机做的IC卡煤气表程序。-EM78P468 Singlechip make use of the IC card gas meter program.

MICROCHIP KEELOQ CODE HOPPING SIMPLE DECODER

一个用来作软件仿真用的KEIL的程序，有仿真的过程-used as a software simulation of KEIL procedures and the process simulation

利用P89C66X系列单片机实现I2C总线从器件函数操作库-use P89C66X Series MCU I2C bus function from the operation of the device

好的学习代码学习文件 初学者的好文章好代码调试通过-Good document for beginners to learn the code to learn a good article, good code debugging through

全面介绍了高质量PCB设计技巧，共为8章。-A comprehensive introduction to high-quality PCB design techniques, a total of 8 chapters.

这是用192*64液晶实现的波形液晶显示。用的液晶型号是OCMJ4*12B，这是用正弦函数显示的。-This is 192* 64 LCD LCD waveform to achieve. LCD model is used OCMJ4* 12B, which is shown by sine function.

AT89C2051与上位机RS232通讯接口子程序,实现单片机与上位机的通讯-AT89C2051 and PC RS232 communication interface subprogram, the realization of SCM and PC communication

AVR单片机的优化RC6 加密算法（速度快，其优化思想绝对值得学习） 在有128bytes RAM 的AVR单片机上执行 rc6 16/10/8(16 bit/10 rounds/8 bytes keys) * 对多数代码进行了 C 语言优化，对数据相关循环移位，模乘等用ASM优化 * 在4MHz无乘法器的AVR上得到平均 1172 Bytes/s的加解密速度。 * 编译器: AVR-G-AVR optimization RC6 encryption algorithm (faster, optimizing their thinking definitely worth learning) 128bytes of RAM in the AVR on the implementation of production 16/10/8 (16 bit/10 rounds/8 bytes keys)* for the majority of code optimization of the C language the data related to cycle shift, mode used by other optimization* ASM 4MHz without the multiplier be average AVR 1172 Bytes/s speed encryption and decryption.* Compiler : AVR-G

带有退格键的键盘输入程序 (for MSP430)，修正厂家代码中对退格键不支持的错误-Backspace with the keyboard input program (for MSP430), to amend the code of manufacturers backspace does not support error