Expository essay about a computer, expository essay how to write the functions of a computer

Computers, also known as electronic computers, were invented by scientists after years of research. Electronic computers have been "multiplied" for several generations to become "versatile" computers. The computer can access the Internet, and the content on the Internet is even more colorful.

The software system of the computer is divided into two categories: one is the operating system software, mainly the Windows operating system and the Linux operating system, etc., and the most primitive is the DOS operating system.

Computers are divided into three main components: the monitor, the main unit, and the keyboard, as well as some auxiliary hardware. The host is the general manager of the computer, equivalent to the human brain, almost all the documents and information are in charge of it, and the work you want the computer to complete is also mainly responsible for it, and it also has to assign work to other family members, so other family members are called "peripherals".

Monitor,Its task is to show ** to everyone,Therefore, it is a major output device,It is connected to the display card of the host by a **cable,Keyboard,Its function is the opposite of the display,Responsible for the general manager"Input"The user's work requirements for the general manager. The user's instructions must go through it in order to tell the host, and the host knows what to do. There are 26 alphabet keys on the keyboard.

D-pad. Numeric keys and several important keys are the main input devices of a computer. The computer also has a good brother, that is, the mouse, as long as you can tell the chief manager what to do by operating the left or right button of the mouse, which adds great convenience to the computer user.

With the development of technology, computers have entered the lives of many people. It has brought us a lot of convenience, and the computer is a wonderful crystallization of modern technology.

I'm an ordinary computer, and I don't have a proud family crest for me to show off, but I don't feel inferior for this expository essay references about computers: expository essay on computers installing a computer for the first time (expository text) today.

Expository text: How to write the functions of a computer.

A computer is a modern electronic device that has a variety of functions. The following are the common functions of the computer:1

Document processing: Computers can be used for a variety of document processing, such as composing, printing, saving and sharing documents, electronic documents, and presentations. 3.

Work: Computers can be used for a variety of work, such as making reports, managing projects, calculating data, and drawing charts. 5.

Learning and education: Computers can be used for learning and education, such as learning, distance education and electronic textbooks. The above are some of the common functions of computers, and with the continuous development of technology, the functions of computers are also constantly expanding and innovating.