some pdf files describing about PLC concepts and components.

电脑usb转接成I2C口,全套资料,包括电路图和源代码,驱动-I2C adapter into the computer usb port, a full set of information, including schematics and source code, drivers, etc.

sst89c58下载器，使用keilc51的debug调试器下载。将本程序编译后写入sst89c58，并编程为remap 4kbytes。该芯片即有了keil环境下载功能,当p1.0拉低时，启动时进入下载程序，进入下载程序后将会自动删除block0,p1.0高电平时进入用户程序。 进入下载程序后，可以通过串口和keil的仿真环境连通，波特率自动调节,选择load HEX文件，即可将程序下载到sst89c58的低端32keeprom中。除了7e00-7fffh被占用-sst89c58 downloader, use the debug keilc51 Debugger download. This procedure compiled into sst89c58 and programming to remap 4kbytes. The chip has Keil environment that is the ability to download, p1.0 down, start the download entered into the download will be automatically deleted after block0, p1.0 to I enter the user program. After entering the download, through serial and Keil simulation environment connectivity, baud rate adjusts to choose load HEX documents, procedures and can be downloaded to the lower end of 32keeprom sst89c58 China. Apart from 7e00-occupied 7fffh

MSP430F149最小系统板功能测试程序，端口测试程序，用于驱动板子上的一个LED，适合初学者做实验用，可以直接用于项目 /* 硬件要求：MSP430F149最小系统板一块                                        */ /* 实验目的：1、了解LED发光条件（红色，导通电压1.8V 10mA）             */ /*           2、弄清MSP430F149的GPIO口的寄存器的基本配置                     */ /* 实验功能：点亮发光二极管V1

at91sam7 example this source is very useful

LPC214x的USB代码，IAR EWARM编写-LPC214x USB code, prepared IAR EWARM

基于LPC2146的USB-HID设备程序，一个简易鼠标。-LPC2146 based on the USB-HID device procedures, a simple mouse.

关于嵌入式linux内核的介绍-on embedded Linux kernel introduced

嵌入式C编程与Atmel AVR 美 Richard Barnett等著 清华 周俊杰 等译-Embedded C Programming and Atmel AVR waiting for the United States and Richard Barnett Qinghua Zhou Junjie, et al

一个污水处理的PLC程序，对于很多人来说，是一个很不错的工控方面的源程序

是基于FPGA的光栅尺辩向程序设计！使用的是quartes II开发软件！-FPGA-based optical grating to the program design debate! Using quartes II development software!