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This article mainly explains "what are the necessary external devices for personal computers". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian and go deep into it slowly to study and learn "what are the necessary external devices for personal computers" together!

The necessary external equipment of personal computer is display and keyboard; display is a display tool that displays certain electronic files on the screen and then reflects them to the human eye through specific transmission equipment; keyboard is the channel through which the control information of text information is input into the computer.

Operating environment: Windows 7, DELL G3

What are the necessary peripherals for personal computers?

The essential peripherals for personal computers (PCs) are monitors and keyboards.

A display is also commonly referred to as a monitor. Monitor is an I/O device belonging to the computer, that is, input and output devices. It is a display tool that displays certain electronic files on the screen through a specific transmission device and then reflects them to the human eye.

Computer keyboard is the control information of text information input computer channel, from the English typewriter keyboard evolved. It first appeared on computers as a component called a teletypewriter.

Related Introduction:

A personal computer is a multipurpose computer of a size, price and performance suitable for personal use. Personal computers range from desktops and laptops to small laptops and tablets and ultrabooks.

The development of personal computers can be divided into three stages:

The first wave began with personal computers around 1984.

The first to use personal computers were amateurs. Most of them are engineers who know their own computer hardware and software. The biggest feature of the initial use of personal computers was the dramatic increase in productivity, in that they did things that previously required a human hand and did them faster. At this stage, there are few varieties to choose from, and the machines are relatively crude; users need to know the computer well to use it; there are many people who need to use the machine, but the supply cannot keep up. IBM launched its personal computer, and the user response was very enthusiastic, which laid a solid foundation for the development of personal computers. At this stage, value-added distributors began to appear, they can provide some special applications, or specialized hardware (such as communications, high-quality printers, etc.), popular with the public.

The following products laid the foundation for industrial development at this stage:

(1) Apple personal computers, which were popular with users at the time.

(2) VisiCalc spreadsheet software, characterized by a wide range of uses, easy to use, in a short period of two years, sales of more than 200,000 sets.

(3) The IBM personal computer, which played a decisive role in establishing the future of personal computers.

The second wave began approximately from June 1984 to 1987.

At this stage, more and more people are using personal computers. Because of profitability, manufacturers have launched a variety of different brands, different functions of the product. For a while, the market appeared on the personal computer, a variety of dazzling, but supply exceeds demand, users also feel confused, confused. The computer technology at this stage also has no clear direction, operating systems are different, network design is different, making personal computers not easy to connect to each other, many programs are not compatible. At this time, many large companies began to rethink the development strategy of personal computers. Many executives think personal computers should be able to do things that are actually beyond their capabilities. Personal computers are being tested again by users, who are learning that their capabilities are actually limited as a result of mass production, resulting in lower profits for manufacturers. As a result, manufacturers and users were dissatisfied, and some visionary vendors began to propose an industry standard for personal computers. This standard makes different models of personal computers compatible, which guarantees its development and popularization.

New functions and new uses of personal computers in the third wave:

1. local area network

Enable personal computers to link to each other via the Internet. The standardization of Ethernet (IEEE 802.3) was a milestone in the computer Internet, where personal computers could be connected to each other through switches or hubs. The local area network is a very important link in the network construction of each big organization and enterprise. The local area network itself has long since expanded into a global Internet.

2. email

E-mail revolutionized communications at the time, and users found it convenient and attractive. These factors will make e-mail more popular.

3. image processing

Personal computers already have enough image processing power. Better peripherals are available-color printers, monitors, etc. More powerful applications are emerging: electronic publishing applications, multimedia processing software.

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