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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

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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.

mcu-reset.rar

20ma的电流环通信回路仍应用于一些远程通信的场合，本文为其实现过程。-20ma current loop

四位数数字温度计-Four-digit digital thermometer

C语言控制单片机。里面包含了很多用C语言编写的经典的例子，对初学者入门及提高很有帮助。-C language to control single-chip microcomputer. Which contains a lot of use of C language classic example of entry for beginners and helpful to improve.

I2C总线的一个实例,有原理图的设计,和程序的设计,可直接用在项目开发中,节约开发时间,提高效率.-An example of I2C bus, have the schematic design, and procedures for the design, can be directly used in the project development, saving development time and improve efficiency.

这是msp430系列单片机的封装库，protel99se library，挺有用的哟。-This is the Controller Series MCU package libraries, protel99se library, quite the yo.

STC单片机内部的ISP和IAP系统，提供了单片机内部的低功耗状态-STC Single-chip ISP and IAP internal systems, provide a single-chip internal low-power state