what basic computer programs

explained and displayed, or even the end of the string is unknown. So how can we retain the encoding flag to indicate the encoding of the string? There are some basic methods.For example, add the following content to the form header: Content-Type: text/plain; charset = "UTF-8" For a web page, the web server sends an HTTP header similar to Content-Type along with the web page itself.(Not in HTML, but as a response header sent before the HTML page) The

First, the purpose of the experiment 1. Master the concept of network topology structure. 2. Understand the main factors to consider when choosing a network topology. 3. Recognize several common network topologies. 4. Master the basic methods of accessing information by using a browser to access the Internet.Second, the content of the experiment 1.Understand the software and hardware information of the network used in the experiment; 2.Draw the networ

What are the symptoms of a bad card? For a friend who is addicted to computers, it is necessary to know the point of the computer, such as the problem is to be understood, in order to allow the vast number of friends to learn more knowledge, today small edit to identify the symptoms of the bad card. In fact, for this problem, as long as we understand the role of graphics card, it is easier to think of the

What is EF? (EF basic series 2) What is ef?Background of EF: Write ADO. NET data access code is dull and boring, so Microsoft provides an object relationship ing framework (EF ), EF can automatically help our program to generate related database activities. Definition of EF: EF is a framework for object relationship ing. It ensures that programmers use relevant d

network address translation (translation) is an Access wide area network (WAN) technology that transforms a private (reserved) address into a legitimate IP address, which is widely used in various types of Internet access and various types of networks. The reason is simple, Nat not only solves the problem of LP address insufficiency, but also can effectively avoid attacks from outside the network, hiding and protecting the computer inside the network

, which is widely used in various types of Internet access and various types of networks. The reason is simple, Nat not only solves the problem of LP address insufficiency, but also can effectively avoid attacks from outside the network, hiding and protecting the computer inside the network.One. DHCP protocolThe DHCP Dynamic Host Provisioning Protocol (PROTOCOL) is a LAN protocol that works with the UDP protocol and has two uses: automatically assigni

) technology that transforms a private (reserved) address into a legitimate IP address, which is widely used in various types of Internet access and various types of networks. The reason is simple, Nat not only solves the problem of LP address insufficiency, but also can effectively avoid attacks from outside the network, hiding and protecting the computer inside the network.Back to top of 11. DHCP protocolThe DHCP Dynamic Host Provisioning Protocol (

the end because the computer is too large to run out of resources caused " Crash ". Another point is that in the computer operating system running a large number of programs, so that the system memory resources are not enough to cause "the crash." 5. System files are corrupted caused by the "crash", system files are mainly refers to the

In today's Baidu Guardian use of the tutorial, we will come together to talk about the computer response slowed down. However, no matter what causes the computer to slow down, users can use Baidu Guardian computer acceleration function to speed up the computer Oh! Ba

In the daily life of using the computer, we often encounter the slow running of the computer, this is actually a computer running too much or too large program caused, then the computer runs very slowly what reason? How to solve? The following small series for everyone to in

What about the local computer connection? The details are as follows: First, check the NIC state or bad If the NIC is not working properly or is damaged, you may not see the "Local connection icon" When you open the Network and Dial-up Connection window. To check if the NIC is working properly, you just click the "start" → "settings" → "Control Panel" command, in the Pop-up Control Panel window, double-cl

address. The client browser initiates an HTTP session to 220.161.27.48, and then encapsulates the packet via TCP, which is entered into the network layer.2) in the client's transport layer, the HTTP session request into the message segment, add the source and destination port, such as the server use 80 port to listen to the client's request, the client by the system randomly select a port such as 5000, and the server to exchange, the server to return the corresponding request to the client's 50

The following assembly of computer small series This article simply for you to introduce, DIY computers have what hardware, the role of these hardware is what, a look at it. CPU: The processor, the most core hardware of the computer, the control center of the system, the unified coordination and control of

What to do when the computer memory is not always prompt enough The computer memory is always insufficient solution one: The default state is to let the system manage virtual memory, however, the system default settings are usually more conservative management, in the automatic adjustment will cause the paging file is not continuous, and reduce the efficiency o

program are not one by one corresponding. A program can be loaded into memory multiple times, becoming multiple simultaneous processes, such as opening multiple terminal windows at the same time, each running a shell process, and their corresponding programs are/bin/bash files on disk. The operating system (OperatingSystem) itself is also a piece of program that is saved on disk, and the computer executes

Computer naturally need to install a lot of programs and software, if you run into the back does not need to use, we can directly unload them is, in general, we uninstall software can be done in two ways, one is through anti-virus software, security guards and other Third-party software methods to uninstall, There is a direct control panel in the computer to unin

port number with a unique identity on the network can be combined to form a uniquely identifiable identifier socket. socket principle mechanism:? There are sockets on both ends of the communication. ? network communication is actually the communication between sockets. ? data is transmitted via IO between two sockets. UDP Transport Datagramsocket and Datagrampacket establish the sending end, the receiving end. set up the data package. invokes the Send receive method of th

environment variable, in order to be able to compile the source files anywhere.Java_home: In order to change the JDK path, do not affect the path variable separately for the JDK to create a new variable, to prevent the misuse of other system variables.Class_path: When you execute a class file, look for the scope of the class file's location, and the purpose of classpath is to tell the Java execution Environment which directories can find the classes or packages you need to execute the Java prog

Basic configuration and tuning policies for high-availability and high-performance computer systemsQingdao railway station Computing Center Yu Dong Liu Mei Computer users need such a computing environment: ReliabilityThe performance must be sufficient to handle various loads in complex environments. Users place various applications in

Basic knowledge1, the composition of the computer system as shown:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/84/8D/wKiom1eUb_7h1WnkAAHg_rgCVOk750.png "title=" Qq20160724153555.png "alt=" Wkiom1eub_7h1wnkaahg_rgcvok750.png "/>2.5 basic components of modern computers:Arithmetic, controller, memory, input device, output deviceNow we collectively refe