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以太帧的解析和封装程序 GCC下编译通过-Analysis of Ethernet frames and packaging procedures

基于MAX5980芯片的POE网络交换机设计(This article is done with the MAX5980 chip and the Ethernet network switch chip. The joint design scheme demonstrates the feasibility of the practical application of the POE chip combined with the network switch. The scheme is designed to be complete and stable, and can fully meet the normal operation of various types of powered devices of the back-end network.)

分布式温控系统基本要求 1. 中央空调是冷暖两用，但一次只能使用一种温控装置。当设置为供暖时，供暖温度控制在25°C～30°C之间，当设置为制冷时，制冷温度控制在18°C～25°C之间。 2. 中央空调具备开关按钮，只可人工开启和关闭，中央空调开启后处于待机状态。当关闭后，不响应来自房间的任何温控请求。当有来自从控机的温控要求时，中央空调开始工作。当所有房间都没有温控要求时，中央空调的状态回到待机状态。 3. 房间内有独立的从控空调机，但没有冷暖控制设备。从控机具有一个传感器，实时监测房间的温度，并与从控机的目标设置温度进行对比，决定是否需要制冷或制热，并向中央空调机发出请求。如果从控机发出的请求和中央空调设置的冷暖控制状态发生矛盾时，以中央空调机的状态优先，即中央空调机不予响应。 4. 从控机只能人工方式开闭，并通过控制面板设置目标温度，目标温度有上下限制。所有房间的初始目标温度由中央空调机设置，每个房间的空调机开启时要读取中央空调机预置的房间温度。温度升降范围应该在目标温度的上下1 °C。房间不考虑大小和管道的分布及大小问题，在达到目标温度后，房间的温度每分钟上下变化0.1°C。 (Basic requirements of a distributed temperature control system 1. Central air conditioning is the well-being of dual-use, but can only use a thermostat device. When set to heating, the heating temperature at 25 ° C ~ 30 ° C, and when set to cooling, the cooling temperature at 18 ° C ~ 25 ° C between. 2. Central air conditioning with switch buttons can only be manually opened and closed, central air-conditioning turned on in standby mode. When closed, do not respond to a request from the room of any thermostat. When the machine from temperature control from the control requirements, central air-conditioning work. When all rooms are no thermostat demand, central air condition back to standby. 3. Room independent from the control air conditioning, but no climate-control equipment. From the control machine with a sensor, real-time monitoring the temperature of the room, and with the goal set from the control unit compares the temperature to determine the need for cooling or he)

If sendStdio is non-zero, the current process s stdio file descriptors will be sent and inherited by the spawned process.

本程序为课程信息管理系统,,阐释了使用MFC来实现的过程,,(This procedure for the course information management system, and illustrates the process of using MFC to achieve that,)

用C#实现的网络聊天程序，分为客户端和服务器端两个程序，可以用-C# Internet chat program, divided into client and server-side two procedures can be used

测试案例,改案例仅为测试使用，为借用文档，如侵权，请告知删除。(Test cases, change cases only for testing use, for borrowing documents, such as infringement, please inform deletion.)

纯练习式mybatis，第二节小练习，适合初学者，还会第三节，期待下载(Pure exercise type mybatis, Section II small exercises, suitable for beginners, but also the third quarter, and look forward to download)

Intelligent Video Surveillance documentation

C#版 IC卡读写实例源码，考勤系统源码(有截图)