FreeRTOS 4.04版源代码

此文件包含用visual c++编译的程序代码，绝对可用CH04.rar-This file contains the use of visual c++ compiled code, can be used absolutely CH04.rar

本文介绍了如何用AD识别用户输入的键盘的方法，较之点阵识别有其不可替代的优势；因为如果用4*4的话须消耗8个I/O口，而如果系统有AD功能的话就可能轻松解决了。 单片机8051F330发给ARM然后发给电脑。 其原理就是利用电阻的分压，按键时产生不同的电压，再用中断快速读取电压；然后对其进行编码，通过串口软件EASYARM在个人电脑里显示；经实验观察，效果还可以。 -This article describes how to use AD to identify the user s keyboard input methods, compared with dot-matrix recognition has its irreplaceable advantages because if we use 4* 4, then to be consumed eight I/O port, and if the system function in AD, then on may be easily resolved. Singlechip 8051F330 distributed computer and then distributed to ARM. Its principle is to use the sub-ballast resistor, when keys have different voltage, and then quickly read voltage interruption then encode, through the serial port software EASYARM in the personal computer display by experimental observation, the effect can also be.

关于嵌入式系统的串口开发的程序，可以参考。-Serial port on the embedded system development process, can refer to.

一个arm7开发板上的iic（24C02）测试实验，此吃程序用c语言编写。-a arm7 development board iic (24C02) testing laboratories, this eating program is available c language.

一个modbus协议的opc server-an agreement modbus connection Oligomeric Proanthocyanidins server

S3C4510B的一些开发例程，对入门ARM处理器有绝对的帮助-development example of S3C4510B,help to learning ARM processor programmer.

minigui PDA系统 可实现手机功能，短信功能，娱乐功能 包括小游戏，播放器-system can achieve minigui PDA mobile phone functions, messaging, entertainment features, including small game, the player

this code is for lcd interfacing with rtc-this code is for lcd interfacing with rtc

数码管显示首先计数，达到设定值后，闪烁，最终显示HELLO，并闪烁，此程序使用C语言编写，实验硬件是AT89C52单片机的开发板，经过实际测试，程序可以正常运行