用于单片机的开发 用modbus协议 实现上位机与下位机的通讯

以上是一些简单的单片机入门教程， 希望可以对刚学单片机的朋友有点帮助-These are some simple single-chip Tutorial, hope that we can just learn a little bit to help a friend SCM

VGA视频2*2分配器图纸，protel 99制作。 -VGA Video 2* 2 Distributor drawings, Protel 99 production.

In-system Programming with C51 MCU and External Flash

在keil下 的51 简单的os 51_00_OS-Under 51 in keil simple os 51_00_OS

HMC6253 interfacing with atmega

I2C的源代码,经本人测试通过,完全没有任何错误-I2C source code, as I tested, there is no any error

单片机的数字时钟，有修改时间功能，通过7段数码管显示，通过1，2，3按键进行年月日的切换。-Single-chip digital clock, a modified function, through the 7 Digital display through 1,2,3 keys to the switch date.

程序能够实现将十二位的二进制数5V对应fffH变换成一路0~5V的电压。 精度方面：在使用时上下波动范围大约是0~2fH能保证高位寄存器准确； 调试过程中遇到了一系列问题：（1）p0口的使用需接上拉电阻，内部没有带电阻；（2）调试的过程最好使用单步运行，以便于察看寄存器的内容；（3）对系统板不熟悉，一些硬件方面容易出问题，像口连接，电源、地的连接。（4）直流电源使用不准确，内部的各个电源输出是独立的，需要共地。 -procedures to achieve 12 to a binary number 5V counterparts fffH transform all the way into the 0- 5V voltage. Accuracy : the use of fluctuating ranges of 0 ~ 2fH can guarantee accurate high register; debugging process encountered a series of questions : (1) p0 I need to connect to the widening use of resistance, with no internal resistance; (2) the process of commissioning the best use of single-step operation, in order to inspect the contents of Register; (3) The right not familiar with the system board, Some hardware problems are likely to occur, such as connectors, power, and connectivity. (4) DC power supply use of inaccurate, all within the Power output is independent, to the total needs.

奉献：AT45DB041读写程序 [日期：2005-11-29] 来源：侃单片机 作者：etiller [字体：大 中 小] -Dedication: AT45DB041 read and write procedures [Date :2005-11-29] Sources: McCain Singlechip Author: etiller [Font: Xinhuanet]

基于s3c44b0的芯片实现触屏的彩色显示。-The chip-based s3c44b0 touch-screen color display.