Case 6 Contract Management System

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]本文介绍了如何利用CPLD(复杂可编程逻辑器件)与单片机的结合实现并行I／ O(输入／输出)接口的扩展。该设计与用8255做并行I／O接口相比，与单片机软件完全兼容， 同时拥有速度快，功耗低，价格便宜，使用灵活等特点-] This article describes how to use the CPLD (complex programmable logic device) and the single-chip combination to achieve parallel I/O (input/output) interface expansion. The design and use 8255 to do parallel I/O interface as compared with the single-chip software is fully compatible at the same time have a fast, low power consumption and cheaper prices, the use of flexible features such as

24*2发4黑中体 汉字库,以txt结尾但不是文本文件-24* 2 4 black hair-Store, in the end txt but not text files

实现实包络对齐。采用插值，拟合处理。更加精确的对齐-To achieve solid envelope alignment. Using interpolation, fitting handle. More accurate alignment

一段很好用的把经纬度转化为平面坐标的代码-a good use put into longitude and latitude coordinates of the plane code

通过MATLAB对QPSK进行仿真，再在FPGA中实现QPSK的基本功能-By MATLAB simulation of QPSK, and then in the FPGA to implement the basic functions of QPSK

用VHDL设计CRC发生器和校验器，供初学者参考。-CRC generator and calibration device for advanced users.

pc 连接nokia的手机连接库及例子。只是我连接的时候有点错误。不过这是官方提供的。我的手机是6101-pc to connect nokia phone to connect database

lcd编程，用在lcd上的各种点阵图形，可以帮助大家加速开发进度。文件里面的是16X16大小的图片。希望对大家有用-lcd programming, used in various dot matrix lcd graphics, everyone can help speed up the development progress. File inside the picture size is 16X16. Hope useful for everyone