Computer - necessity of modern life

Computer only machines, which can be calculated. Let's look at the past and find out who the geeks, the idea of one device, the calculation may be in the realization of the objectives, inputs and outputs on the right page.

Abacus in May 3000 BC, the first computer, because it is a simple device. In 1941, German engineer Konard Zuse developed the first programmable calculator using binary mathematics and Boolean logic. UNIVAC was built in 1951, and the breakthrough came in 1952 when Texas Instruments developed the integrated circuit. In 1964, the IBM mainframe computer IBM 360-m Apple has the Apple I and Apple II in 1976, in 1977. The computer is well known that most of us, in terms of appearance and functionality was in 1981 when the early IBM PC.

The main functions of the computer are:

1 - It follows, and in a state with a specific set of instructions.

2 - You can preset list of instructions, as is known, a computer program.

The main components that are needed for the computer:

1 - input from the keyboard and mouse to input commands and data on your computer.

2 - output devices, such as images or display, printer, etc., so that we can see how the team did.

3 - CPU, as you know, the brain with a computer, where all data can be processed and the instructions executed.

4 - The memory power of a computer that stores data and instructions in it.

5 - mass storage devices that are permanently stored and will continue to be large volumes of data. The most common ones are floppy drives, CD-ROMs, hard disks, etc.

Computers come in different types for different purposes, taking into account the different categories of users. By its very nature, the various possibilities and value, respectively. The group is the most popular computer for personal use with a single user at a time. They come in two forms, a desktop and laptop. Then There are fewer computers, and palm in the palm of the user. Although it is the smallest and most types of personal computers, computer center, as well as the largest supercomputers high end computers that have a large organization.

Computers can use a variety of functions such as word processing, digital audio, video, song, internet, communications and networks, and desktop publishing systems. Computer processing of the text includes the possibility of automatic correction of spelling and grammatical errors. The Internet is one of the greatest inventions of mankind. Connects an infinite number of computers on the network.

Ungodly amounts of information can be found on the Internet and communication services such as messaging, audio and video are available free of charge. Figure engineers are equipped with computers for editing audio and video songs. Type of production can not be completed without the help of a computer. Today, computers for banks, train and flight booking, education, and to protect the country. There are nearly one sector of the economy, rather than with computers. Important and critical business functions can not be achieved without the aid of a computer.

Like people, computers are also vulnerable to diseases caused by viruses. Installed a backup copy of all data stored on computers must be maintained in order to make a backup in case of failure of the media. Devices to protect against unauthorized use of passwords and must be protected from viruses by installing anti-virus software on them. The computer, if they are adequately protected and can be used for humanity, and results may, without which they can achieve.