i2c总线对于单片机的扩展很有帮助, 可以通过两个i/o口进行大量的扩张. 这是一个i/c的应用程序....

奉献：485 [日期：2005-11-29] 来源：侃单片机 作者：etiller [字体：大 中 小] -Dedication: 485 [Date :2005-11-29] Sources: McCain Singlechip Author: etiller [Font: Xinhuanet]

万龙开发板的原理图和pcb图，仅供交流和学习用。-Wanlong development board schematic and pcb map, only with communication and learning.

MSP430F149的数据采集程序，并显示在LED上。-MSP430F149 data collection procedures, and displayed on the LED on.

看门狗使用例题，包括喂狗和设置使能和关闭看门狗-watchdog use of excellence, including DOG and can be set up and shut down so that watchdog

John Catsoulis编写的Designing Embedded Hardware 。介绍了汇编语言，SPI,I2C,串口，usb,网口等硬件电路设计。模拟电路设计，AVR单片机原理-John Catsoulis prepared Designing Embedded Hardware. Introduction of assembly language, SPI, I2C, serial, usb, network hardware such as circuit design of the mouth. Analog circuit design, AVR Singlechip Principle

51汇编语言，格式为.chm文件，这个好象就是九十年代初孙涵芳（如果我没记错的话）写的一 本书后附的子程序。子程序不全对，至少有个除法的余数有问题，扩大了2倍，我记不清是哪个了，你把其中的一个左移语句去掉就行了，别的记不得了。欢迎常联系。-51 assembly language format. Chm documentation, It was like the early 1990s-wu (if I remember correctly so) wrote a book attached to the subroutine. Subroutine incomplete right, at least a division of the remaining problems, and expanded two times, I can not remember clearly what is, you put one of these bits removed statement on the visit, other reporters unnerving. Welcome regular contact.

三菱16位单片机M306N0系列，串口驱动源码。-Mitsubishi 16-bit microcontroller M306N0 series, serial driver source code.

cy7c68013代码，c y7c68013代码，-CY7C68013 code, c y7c68013 code, c y7c68013 code,

实现了有凌阳的外部中断进行技数，同时有2赫兹的内部定时器，以实现对外部频率的采集 -Sunplus has achieved the technology to a number of external interrupt, while Hertz has 2 internal timer in order to realize the acquisition of external frequency

基于80C51和CH375的实现USB打印机驱动器的设计与实现方法-Based on 80C51 and CH375 realize the USB printer driver design and implementation