What Is a Computer Hardware Diagnostic?

Computer hardware refers to the general term for various physical devices in a computer system that are composed of electronic, mechanical, and optoelectronic components. These physical devices form an organic whole according to the requirements of the system structure and provide the material basis for the computer software operation. In short, the function of computer hardware is to input and store programs and data, and execute the program to process the data into a usable form. When the user needs it, the data is output in the way required by the user.

Computer hardware systems are usually composed of the following five components: memory, controller, computing unit, input device, output device. Among them, the main function of the arithmetic unit is responsible for executing computer instructions, and is an important component for processing and computing information. The controller is a program that sequentially executes various components in the computer, and its purpose is to realize the automatic operation process of the computer. There is no doubt that the player who stores information in the computer is the memory. Its main function is to store the three aspects of the program, the result of the operation, and participation in the operation. The information entered in the input device contains graphics, numbers, sounds, etc. Mainly the original data is input and processed. The output device's role is exactly the opposite. The output device outputs the processing results of these information . ^[1]

There are several main components in the hardware composition of the computer, as follows:

1. CPU:

Also known as the central processing unit, it is the core component of the entire computer. When executing all instructions such as data operations and transmissions, it needs to be guided by the central processing unit. As the heart of the entire computer, it controls all the computer's information processing process.

2. Input and output equipment:

In computer hardware, input and output devices are an important component. Input devices are literally devices that input information data into the computer, such as keyboards, cameras, mice, and microphones. They all belong to the category of input devices; output devices are The hardware devices, printers, and monitors that output the results of the display operation of information data are classified as output devices, mainly for the purpose of displaying display data to people. However, in some cases, the entire computer can be used as an output device. When the computer is connected to the network, the entire computer becomes a network output device.

3. Storage device:

From the name, the storage device is a hardware device that stores information. It is an important warehouse in the entire computer. It stores all the input and calculated data. It can save data and degrees, and can also perform instructions according to the instructions of the central processor. Extraction and output of data. The storage device existing in the computer is the internal memory, and the externally linked device becomes the external memory. ^[2]

Common failures of computer hardware include damage to memory modules, damage to motherboard components, and damage to hard disks. Because these factors cause poor contact,

1. CPU performance development status

With the continuous development of China's information technology, CPU technology has also ushered in the peak period of development. In the past, if the CPU clock frequency wanted to reach 4GHz, it was impossible.

However, with the maturity of information technology, the computer hardware equipment industry has also ushered in the spring of development. All in all, the future network, miniaturization and intelligence are the main directions for the development of computers. So small computers have become the trend of modern computer development. In addition, the appearance, performance, and price of the computer itself are becoming more and more accessible. At the same time, the processor of the computer is also in a declining trend, and smaller hardware is used to fully realize more powerful, comprehensive and complete information processing. And in the future electronic commercial market, multi-core processors must be the mainstream development trend. Memory is also trending toward smaller size, larger storage space, and lower power consumption. In addition, due to the advent and application of nano-transistor technology, the stimulation of processor performance in computers has a clear manifestation. This is also a major trend in the development of computer hardware applications in China in the future.

At this stage, in the long-term continuous development of computer computing and information technology, more and more high-tech has been applied to it. Therefore, in essence, the development of science and technology and computer hardware are inseparable. Only by ensuring the continuous development and progress of science and technology can the optimization and innovation of computer hardware systems be realized. ^[1]