基于89S51单片机的双步进电机协调控制器的设计带RS485功能

所谓短信猫，其实是一种工业级级GSM MODEM，通过串口与计算机连接，可以通过AT 指令控制进行短信收发的设备。国内目前应用较多的短信猫，都是以SIEMENS 或WAVECOM 模块为核心组装而成的，与普通手机相比更为稳定高效。-The so-called SMS cat is a kind of industrial-level GSM MODEM, connected through the serial port and the computer can be carried out through the AT commands to control the device to send and receive text messages. At present the application of the domestic cat more messages are to WAVECOM module SIEMENS or assembled at the core, and more stable compared to the ordinary high-performance mobile phones.

本文介绍一种以CPLD[1]为核心、以VHDL[2]为开发工具的时间控制器，该控制器不仅具有时间功能，而且具有定时器功能，能在00：00～23：59之间任意设定开启时间和关闭时间，其设置方便、灵活，广泛应用于路灯、广告灯箱、霓虹灯等处的定时控制。-This article describes a CPLD [1] as the core, VHDL [2] for the development of tools for time controller that features not only has the time, but with the timer function, can be between 00:00 ~ 23:59 arbitrarily set to open time and closing time, and its convenient, flexible, widely used in street lamps, advertising light boxes, neon lights, etc. The timing control.

USB人机接口标准规范使用说明，PDF的格式-USB human interface standards for use, PDF format

温室采集以单片机AN2131作为核心控制器件-AN2131 greenhouse collection to single-chip microcomputer as the core control device

语音录放与处理资料-good

自己学习注册表时总结的一些学习的经验，其中有很多修改注册表的方法和一些经验

Some basic things made in labview-Some basic things made in labview...

网络安全入门,介绍网络安全。请仔细学习。-Introduction to network security, network security introduction. Please study carefully.

< AVR_U盘嵌入式FAT文件系统> 文件介绍了AVR Memory Stick嵌入式中实现类似操作系统的FAT文件管理系统，这些内容主要包括，文件系统的命名规范，文件寻址路径规范，文件系统核心数据结构的定义，文件系统读写类函数原型的定义。- document describes embedded AVR Memory Stick to achieve a similar operating system FAT file management systems, which mainly include the file system naming convention, document addressing the path specification, file system core data structure the definition of the file system functions to read and write the definition of the prototype.

这个是关于构建校园网页面电子邮件系统的一个方案 或者可以说成毕业论文都可以 -is on the website- building campus e-mail system or a program that can be as dissertation