firefox_ukey_plugin

在局域网中，管理员常常需要将某条信息发送给一组用户。如果使用一对一的发送方法，虽然是可行的，但是过于麻烦，也常会出现漏发、错发。为了更有效的解决这种组通信问题，出现了一种多播技术（也常称为组播通信），它是基于IP层的通信技术(In a LAN, administrators often need to send a certain message to a group of users. If one to one transmission method is used, it is feasible, but it is too troublesome, and often there will be missed and wrong hair. In order to solve this kind of communication problem more effectively, there is a multicast technology (often called multicast communication). It is a communication technology based on the IP layer.)

stm32实现MODBUS-MODBUS做主站

TMS320C6000系列CSL函数手册，方便查看CCS提供的CSL函数原型和功能。(TMS320C6000 series CSL function manual, is convenient to check the CCS provides the CSL function prototypes and function. )

gps接收机的源代码，采用vc++ , 值得一看- (GPS receiver s source code, using vc++, worth a visit)

说明：  实现路由器功能，可以实现不同网段的主机之间通信，并且可以过滤ip地址和mac地址(Realize router function, realize communication between hosts in different network segments, and filter IP address and MAC address)

电机学，可很好的了解电机的结构和控制，可为学习伺服原理打基础(Motor learning, a good understanding of the structure and control of the motor)

：先输出一个表示英文月份的字符数组，再输如任意一表示时间的数组；再用cin.getline读取，最后输出所求结果。(Datetime converter.)

说明：  基于QT的医院病人信息管理系统，实现了增删改查，注册登录界面等(The hospital patient information management system based on QT realizes addition, deletion, modification and query, registration and login interface, etc)

短信群发系统，在一些业务范围广泛的公司中，当公司有了新的通知要告诉在外地的员工，通常使用拨打电话的方式，这样虽然能把事情说清楚，但是当在外的员工比较多时，工作量很大，为了解决这个问题，可以开发一个企业短信群发管理系统。企业短信群发管理系统主要利用硬件短信猫发送短信，并且可以查看SIM卡中收到的短信。(Mass messaging system, in a number of business a wide range of companies, when the company has a new notification to tell the staff in the field, normally used by calling the way, so although things can make it clear, but when the staff out for a long time compared , the heavy workload, in order to resolve this problem, can develop an enterprise management system for mass text messaging. Short Message management system for enterprises mainly use the hardware to send SMS text messages a cat and can view the SIM card text messages received.)

实现16QAM完整的调制解调系统，包括基带信号串并转换，星座图映射，升抽样成形滤波，升采样半带滤波，数字上变频，功放的多项式非线性效应，加性高斯白噪声信道，接收端下变频，降采样，匹配滤波，绘制接收端星座图。(16QAM modulation and demodulation realize the complete system, including the baseband signal string and conversion, constellation mapping, sampling shaping filter liter, half liter sampling with filtering, digital up-conversion, amplifier polynomial nonlinear effects, additive white gaussian noise channel, the receiver end down-conversion, down-sampling, matched filtering, draw the receiver constellation.)