Experts, help with these computer questions 1 What is a keyword? What is his role?

In the search engine industry, the so-called keyword, which is the term used in the content name of the product, service or company that visitors want to know. For example, if a customer wants to buy flowers online, he will type the keyword "flowers" into the search box to find the relevant information.

To put it simply, a keyword is a word or word that the user enters when using a search engine and can summarize the information content that the user is looking for to the greatest extent, which is the generalization and concentration of information. For example, "flowers" in the example above. When it comes to keywords in the SEO industry, they often refer to the core and main content of a web page.

For search engines, what is your page about in terms of what it's about, and that aspect boils down to one (and more often than that, multiple) keywords. In order to better rank your web pages, you also need to understand these concepts: keyword density and keyword stuffing.

To add: "Please enter a keyword" is a word that many friends often see. This term is seen in some ** above in the search box. This means that you are prompted to enter a keyword for the information you want to search for.

This paragraph] computer language terms.

A keyword is a value that identifies a specific data item for each record in a file.

A keyword is a predefined identifier in a computer language with a special meaning, sometimes called a reserved word.

What you did on the test, every programming language has keywords.

1.(1) Automatic control capability.

2) Fast processing speed.

3)"Memory"Competent.

4) Be able to make logical judgments.

5) High calculation accuracy.

6) Support human-computer interaction.

7) Strong versatility.

2.A computer virus is a kind of artificially created program that destroys computer information or systems during computer operation. This kind of program does not exist independently, it is hidden in other executable programs, and it is both destructive, contagious and latent.

It will affect the running speed of the machine and make the machine unable to operate normally; At worst, the machine is paralyzed, which will bring immeasurable losses to users. This destructive program is often referred to as a computer virus.

1 Characteristics of computer viruses.

Computer viruses have the following characteristics:

1) Parasitism.

2) Contagious.

3) Latentity.

4) Concealment.

The computer is a modern electronic computer used for high-speed calculation, which can perform numerical calculations and logical calculations, and also has the function of storage and memory. It is a modern intelligent electronic device that can operate according to the program and process massive amounts of data automatically and at high speed.

A computer that consists of a hardware system and a software system that does not bother with any software installed is called bare metal. It can be divided into five categories: supercomputers, industrial control computers, network computers, personal computers, and embedded computers, and the more advanced computers include biological computers, photonic computers, quantum computers, etc.

Its application field has expanded from the initial military scientific research application to all fields of society, and has formed a huge computer industry, which has led to technological progress on a global scale, which has triggered profound social changes, and computers have spread all over ordinary schools, enterprises, and institutions, and have entered the homes of ordinary people, becoming an indispensable tool in the information society.

Binary**.

According to the query question bank test questions, what is the representation of all the letters and messages in the computer: aOctal**; b.Binary**. Yard; d.Decimal. Answer: BBinary**.

All the information in the computer is stored inside the machine in the form of a "binary" deprimation. The computer can only recognize 0s and 1s, so all information is stored in the machine in the form of 0s and 1s (i.e., binary), and the storage unit used is the bytes. There are only two digits in binary encoding, 0 and 1, which are easily represented by physical elements of distate, that is, the computer uses binary to perform data processing and processing, which is technically feasible and easy.

The computer system consists of two parts: the hardware system and the software system. Hardware refers to the various physical devices that make up a computer, that is, the actual physical devices that we can see and touch as we introduce in "Understanding Computers". It includes the computer's host and external devices.

Specifically, it consists of five functional components: combinators, controllers, memories, input devices, and output devices. These five parts work in tandem with each other and work together.

The simple working principle is that the input device first receives external information (programs and data), the controller issues instructions to send the data to the (internal) memory, and then issues command commands to the internal memory. Under the command to take instructions, the program instructions are sent to the controller one by one. The controller decodes the instruction, and according to the operation requirements of the instruction, issues the number of storage and retrieval commands and operation commands to the memory and combinator, and the calculation result is stored in the memory after the combinator calculation.

Finally, under the effect of the number and output command issued by the controller, the calculation result is output through the output device.

Computer software systems include two categories: system software and application software. System software such as operating systems, various language processing programs, various database management systems, etc. Application software includes mathematical calculation software package for scientific computing, statistical software includes word processing software package (such as WPS, Word, Office 2000), image processing software package (such as Photoshop, animation processing software 3ds Max), various financial management software, tax management software, industrial control software, auxiliary education and other special software.

A computer is a system that can automatically and efficiently input, process, output, and store data according to pre-stored programs.

One of the functions of the brain, also known as the computer, is to put the cart before the horse, and the man-machine war.

1. The operation speed is fast and the precision is high, the modern computer can run millions of instructions per second, and the speed of data processing is quite fast, which is incomparable to any other tool;

2. It has the ability to store and remember, the memory of the computer is similar to the human brain, which can "remember" (store a large amount of data and computer programs);

3. Having the ability to make logical judgments, having reliable logical judgment or the ability to write is an important reason for the computer to realize the automation of information processing, and to make logical judgments, so that the computer can not only calculate the numerical data, but also process the non-numerical data, so that the computer can be widely used in the field of non-numerical data processing, such as information retrieval, graphic recognition and various applications;

4. High degree of automation, when using the computer to solve the problem, after people start the computer input the prepared program, the computer can be executed automatically, and generally does not need to directly intervene in the calculation, processing and control process.

Summary. Dear, I'm honored to have your question The information that the teacher found for you here is: () refers to the representation and representation of knowledge in the computer:

Knowledge representation refers to the representation and representation of knowledge in a computer. Knowledge and knowledge representation is a basic technology in artificial intelligence, and this technology is very important, determining how artificial intelligence learns knowledge, which is the lowest and most basic part. Knowledge:

It is the correct conclusion obtained by the receiver of information through the refinement and reasoning of information, the understanding and mastery of the natural world, human society, and the laws of thinking and movement, and the collection of information that the human brain recombines and systematizes through thinking. Knowledge representation: It is the process and method of symbolizing knowledge and entering it into a computer.

It refers to the representation and representation of knowledge in a computer.

Dear, I'm honored to have your question The information that the teacher found for you is: () refers to the representation and representation of knowledge in the computer: The representation of knowledge refers to the representation and representation of knowledge in the computer.

Knowledge and knowledge representation is a basic technology in artificial intelligence, and this technology is very important, determining how artificial intelligence learns knowledge, which is the lowest and most basic part. Knowledge: It is the positive conclusion obtained by the information receiver through the refinement and reasoning of the information chaos, the understanding and mastery of the natural world, human society, and the laws of thinking and movement, and the collection of information that the human brain reorganizes and systematizes through thinking.

Knowledge representation: It is the process and method of symbolizing knowledge and entering it into a computer.

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