韦根协议实现和用io模拟串口实现

嵌入式系统的C语言设计.pdf 介绍C语言在嵌入式系统开发中的一些基本技术和技巧-c_programming_for_embedded_system.pdf

Part IV In part II we discussed the conversion of binary numbers into decimal digits. It is sometimes useful to build circuits that use this method of representing decimal numbers, in which each decimal digit is represented using four bits. This scheme is known as the binary coded decimal (BCD) representation. As an example, the decimal value 59 is encoded in BCD form as 0101 1001. You are to design a circuit that adds two BCD digits. The inputs to the circuit are BCD numbers A and B, plus a carry-in, cin. The output should be a two-digit BCD sum S1S0. Note that the largest sum that needs to be handled by this circuit is S

应用背景矩阵键盘密码锁MCU51单片机在日常生活中比较实用，达到学以致用的目的关键技术开发51程序的简单例子   适合初学者学习51单片机

简易的“串口调试助手” 即 可以像超级终端一样，将命令从发送编辑框输入，在接收编辑框显示串口返回的结果，对于调试想AT命令，开发板（用串口的开发板）-Simple

redboot在xscale上的移植源码，非常好BOOTLOADER，功能强大，易于配置-XScale redboot in the transplant source, very good BOOTLOADER, powerful, easy to configure

该程序为AT91RM9200引导程序，开发环境为ADS1.2，程序在SRAM内运行-The program guide for the AT91RM9200 procedures, development environment for ADS1.2, procedures for operating in the SRAM

这个软件是为初学者使用 keil 的非常基本臂 LPC2138 闪烁 LED 程序写的。

PCI BIOS SPECIFICATION Revision 2.1

MP3音频解码源代码，在源代码的基础上做了一些自己的修改。-MP3 audio decoder source code, the source code so on the basis of a number of its own changes.

用cypress cy7c63723实现的USB鼠标。电路图、源代码-Cypress CY7C63723 Encore C-Combi Mouse Reference Design