protel转pads的工具，原理图和PCB都可以直接进行转换

FLASH存储器件国际标准-FLASH memory international standards

UFFS文件系统专门为NAND Flash设计的嵌入式文件系统

实现cpld和pc机之间的串口通信，PC机传送到CPLD的信息，CPLD传回到PC机-Via verilog language ，cpld can communcate with pc.

嵌入式开发帮助文档-help documentation Embedded Development

mini pcie 规范文本 描述了mini pcie 1.0版的技术规范 -mini PCI Express Specification

一种基于89C51的直流稳压电源电路图，一个新颖的稳压电源设计方案-89C51-based DC regulated power supply circuit, a novel power supply design

ID卡门禁系统，兼容EM4100,有液晶显示、存储10天的进出信息-ID card access control system, compatible with EM4100, has liquid crystal display, storage, 10-day access to information

用OV7720制作摄像头的详细电路原理图 ，以及初始化代码，使用范例。-OV7720 camera with the production of a detailed circuit schematic diagram, as well as initialization code, the use of examples.

总账系统是一个基本的系统，以处理凭证为核心，相应进行账簿报表的查询。各业务系统生成的凭证与总账无缝联接，即以各业务系统明细数据为基础，按发生的经济内容在总帐系统直接生产凭证，日常财务信息可直接在总账中进行查询-General ledger system is a basic system to deal with a certificate at the core, the corresponding query statements to the books. The operational system-generated certificate with the general ledger seamless connectivity, that is, details of the operational system data, according to the economic content of direct production in the general ledger system certificates, day-to-day financial information can be directly carried out inquiries in the general ledger

典型的PID处理程序--Typical PID modification program