一个经典的串口调试程序，经过了很好的测试，是基于s3c2410的....

61键盘测试程序 需先做好8个ioa口键盘-61 Keyboard test procedures required to do eight ioa I keyboard

NEC 78f0361 LCD 的驱动程序-NEC 78f0361 LCD Driver

NXP的LPC2468开发板光盘，深圳优龙科技开发板,IAR下测试通过-NXP

matlab时间序列信号处理，自回归滑动平均模型-ARMA model

基于ARM的24064显示屏工作代码。工程所用芯片型号为STM32F407，开发环境为KEIL5，代码演示了在屏幕上写字以及图片显示。

这是一个不到2000行的操作系统，巧妙地利用ARM9 CPU的内存管理单元(MMU)实现进程的切换。ARM9的4G虚拟地址可分成128个进程空间，每个32M。虽然它们的虚拟地址(VA)都是0-(32M-1)，但是对应的MVA(Modified vitual address,由虚拟地址VA和进程号PID组合而来)不一样，设置MVA对应的页表指向不同物理地址就可以很方便地让各进程运行空间相互隔开。代码很少，注释丰富，希望能对想理解操作系统、了解ARM体系结构的朋友有所帮助。 -This is a trip of less than 2000 operating system, cleverly using ARM9 CPU memory management unit (MMU) to achieve the switching process. ARM9 4G virtual address can be divided into 128 process space, each 32M. While their virtual address (VA) are 0- (32M-1), but the corresponding MVA (Modified Virtual address, and by the virtual address VA and the process of portfolio from PID) not the same, set MVA corresponding page table at the different physical address can be very easy to let the the process of separating the mutual operation of space. Code rarely Notes rich, in hopes of understanding the operating system, understanding the ARM architecture friends help.

三星公司的S3C44B0X的开发板配套光盘的DMA实验源程序-Samsung"s S3C44B0X development board supporting the DMA CD Experimental source

本文UCOS是根据我学习ARM开发以来的一些经验总结，以自己设计的S3C44B0X板为例，给出入门上手的最基础知识。有些东西只是个人的主观认为，不一定准确，算作抛砖引玉吧，欢迎大家指正！-this paper is based on my study of the ARM since some experience to design its own board of S3C44B0X example, the entry is easily the most basic knowledge. Some things are just personal subjective view, is not necessarily accurate, it counted as something, we welcome correct!

基于STM32的独立看门狗实验。适合新手学习实验，。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

89S51单片机并行驱动AD9851的程序，由于在选相中并没有KEILC 所以就选了C-C-89S51 parallel single-chip AD9851 driver of the process, as a result of the election phase and therefore did not KEILC selected C-C++