scroll-bar

空调温度自动控制（lcd显示+上下限可设置）采用80C51+1602+AD590+ADC0809(Automatic temperature control air-conditioning (lcd display+ Upper and lower limits can be set) using 80C51+ 1602+ AD590+ ADC0809)

该加油站管理系统，通过前台软件对后台数据库进行操作(The gas station management system, through the front of the back-end database software to operate)

用vc++编的认证系统，匆忙编的，不好之处，请原谅(with vc series of the certification system, hastily series, it not very good, please forgive)

说明：  在线下载更新程序-----------------

(1) 设计一个整数的补码类，有利于任意长整数的补码表示 及其运算； (2) 整数以十进制输入，对输入的数据要进行合法性检查； (3) 实现十进制数的补码转换、补码输出（输出格式为：每 8bit 一组，各组间以空格隔开）。 ((1) u8BBE u8BA1 u4E00 u4E2 u4E2 u657 u6570 u7654 u8865 u7801 u7C7B uFF0C u6709 u5229 u4E8E u4EFB u610F u657 U793A u53A u5136 u8F3 u8F3 u8F0 U5408 u6602 u03123 u03121 u8R03 U8F93 u51FA u683C u5F0F u4E3A uFF1A u6BCF 8bit u4E00 u7EC4 uFF0C u5404 u7EC4 u952F0 u4EE5 u7A7A u683C u9694 u5F00 uFF09 u3002)

arm9的一些基础知识，有利于初学者用。有关ARM9微处理器系列方面的介绍。(arm9 some basic knowledge will help beginners to use. Aspects of the ARM9 family microprocessor introduction.)

基于vb.net的autocad二次开发关于图形动态装拆模拟能使二维图形三维图形三维曲面绘制spline样条曲线路径往复运动(Vb.net based on secondary development of autocad Assembly and Disassembly on the graphical simulation of dynamic two-dimensional graphics will enable three-dimensional surface rendering of three-dimensional graphics spline spline curve the path of reciprocating movement)

最新版[C程序设计(第四版)].谭浩强。习题内容个人实践，源代码,第三章(The latest version of [C Programming (Fourth Edition)]. Hemopurification. Content of individual practice exercises, source code, Chapter III)

modebus 中文版协议。串行数据传输用。(modebus the Chinese version of the agreement. Serial data transmission.)

在visual c++环境中，使用ADO技术进行数据库编程(In the visual c++ environment, the use of ADO database programming techniques)