What are the main aspects of judging the quality of a computer?

Buying a computer, I personally don't approve of buying a brand machine, and I personally think that buying an assembly machine is due to the following reasons:

First, the brand machine is expensive, and the cost performance is not necessarily high;

Second, although the assembly machine is assembled, but the cost performance is better than the brand machine, choose a good business, the after-sales service is the same good!

The choice of computer is mainly from the following aspects:

1. CPU, ** processor; This is the core!

Second, the size of memory determines the performance of the computer, although it is not the only one!

Third, the hard disk, the size of the hard disk, should be very large now!

Fourth, flash memory. 5. Graphics cards, now they all use independent graphics cards, no need to integrate graphics cards!

Since it's DIY, you have to consider the compatibility of the components on the motherboard, first look at the CPU, now it's all dual-core, Intel or Pentium, and then according to the use, if you deal with more images or gamers, you need a high-performance graphics card, home, generally 512M graphics card, hard disk 500G, memory 2G OK.

Cost performance, probably whether the performance of the accessories is high, whether it is balanced, whether it is stable and unstable, and whether the price is reasonable.

Buying a computer, whether it is assembled or branded, you have to look at half of the luck, half of the brand, the so-called good and bad, mainly depends on the performance of the hardware, the correct hardware matching, the choice of brand, in order to match a good computer.

Configuration equalization and hardware quality.

A computer, commonly known as a computer, is a machine that can be used for high-speed computing, as well as storage functions. Nowadays, computers can do more work without it. Below, let's look at the characteristics of computers.

The speed of computing can reach 1,000 billion operations per minute, which is very fast. Many complex computing problems can be thrown to the computer to solve, such as the calculation problem of Microsoft Dao, the 24-hour weather problem, and so on. High accuracy.

The accuracy of computer calculations is very high, and dozens of significant figures can be calculated with an accuracy of a few parts per million. Strong operational ability. The computing power of the computer is very strong.

You can decide whether to proceed based on the instructions. If yes, count it below. If not, leave and then give the data.

Large storage capacity. The computer also has the ability to store memories and recall, which can store the data of Ohno Imperial and call it up when needed. Computers are so powerful that it's no wonder that humans are afraid of being defeated by computers one day.

1. Fast operation speed; Because computers use high-speed electronics, they can work at extremely high speeds.

2. High calculation accuracy; Since the computer uses binary to represent data, its accuracy mainly depends on the length of the computer's unwritten words, the longer the word, the more significant digits, and the higher the accuracy.

3. Strong logical operation ability, able to compare and judge information.

4. Large storage capacity; The memory has the characteristics of dry state memory, and can store a large amount of information, and this information includes not only all kinds of data information, but also the program that processes this data.

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The training of computer application technology is only to meet the needs of the development and application of computer technology in enterprises and institutions, and has a solid basic computer knowledge, computer professional knowledge and strong computer office automation, database and other common software application capabilities, and basic computer network application capabilities.

Able to engage in computer-related applications such as computer office automation and computer software applications in relevant departments of enterprises and institutions, and develop comprehensively in moral, intellectual, physical and aesthetic computer majors.

The five main features of the computer are:

1) High degree of automation and strong processing capacity.

Computers represent the process of processing information as a program consisting of many instructions in a certain order. Computers have the ability to store programs in advance and execute them automatically according to the stored programs without human intervention, so there is a high degree of automation.

2) Fast computing speed and strong processing power.

Because computers use high-speed electronics, they can work at extremely high speeds. At present, ordinary microcomputers can execute hundreds of thousands of instructions per second, while giant computers can reach billions or even tens of billions of times per second. This rate is still increasing as technology evolves.

3) It has a high calculation accuracy.

In scientific research and engineering design, there are high requirements for the accuracy of the calculation results. General calculation tools can only reach a few digits, while the accuracy of the computer to the data processing results can reach more than a dozen digits, dozens of significant digits, and even any accuracy can be achieved according to the need. Since the computer tying uses binary representation of data, its accuracy mainly depends on the length of the computer's words, and the longer the word, the more significant digits and the higher the accuracy.

Tease. 4) It has the memory function of large storage capacity.

The memory of the computer has the function of storing and remembering a large amount of information, which gives the computer the ability to "remember". At present, the storage capacity of computers has reached gigabit or even higher orders of magnitude, and is still increasing, and its "memory" function is an important difference from traditional computers.

5) It has the function of logical judgment.

Computers not only have basic arithmetic ability, but also have the ability to make logical judgments, which enables computers to carry out work with the nature of logical processing, such as data classification and information retrieval. This ability is a prerequisite for computers to process logical reasoning.

In addition, the microcomputer also has small size, light weight, low power consumption, strong function, flexible use, easy maintenance, high reliability, easy to master, cheap and so on.

1. Fast operation speed: the internal circuit of the computer is composed of various arithmetic operations at high speed and accurately. Today's computer systems have a computing speed of trillions per second, and microcomputers can reach more than 100 million times per second, enabling a large number of complex scientific computing problems to be solved.

2. High calculation accuracy: the general computer can have more than a dozen or even dozens of (binary) significant digits, and the calculation accuracy can be from a few thousandths to a few millionths, which is beyond the reach of any calculation tool.

3. Strong logical operation ability: the computer can not only perform accurate calculations, but also have logical operation functions, and can compare and judge information.

4. Large storage capacity: The memory inside the computer has memory characteristics and can store a large amount of information, which not only includes all kinds of data information, but also includes programs that process these data.

5. High degree of automation: because the computer has the ability to store memory and logical judgment, people can incorporate the pre-programmed program group into the computer memory, and under the program control, the computer can work continuously and automatically without human intervention.

6. Cost-effective: almost every household will have a computer, which is becoming more and more common and popular, and the computer will become one of the indispensable electrical appliances in every household in the 21st century. Computers are developing rapidly, and there are desktops and laptops.