What are personal computers?
Advances in technology in the 20th century, especially in the field of communication, have created a revolution in electronics, the influence of which is felt around the world. A representative part of this revolution was the arrival of a personal computer (PC). Personal computers are computers to be used by individuals in homes or offices. Their retail prices, size and skills are practical for use in almost all homes and offices in the United States and other developed countries. The operation of these computers relies on a small computer chip known as a microprocessor that adjusts the functioning of the computer. The microprocessor controls everything the computer does, and every process must go through it first. Computers also have memory, both long -term (read or ROM memory) and temporary (memory with random access or RAM) as well as storage data. ROM CONTAINS basic software that allows the computer to run and generally does not change; RAM is used to store information with which the computer is currently working with asare open programs.
microprocessor and memory are contained as part of a large plate of the perimeter called the motherboard. The motherboard also acts as an intermediary between a microprocessor and other systems on a computer such as units and ports. A hard disk or hard drive is where programs and files are stored. Unlike RAM, the hard drive has a large capacity and is designed for long -term storage. Here are most data on personal computers.
Another important part that is common to all personal computers is a power supply that regulates the amount of electricity used by the computer at the time. Most computers also have audio cards and graphics cards that are pilgrimage plates of circuits that connect to the motherboard for processing audio and video data. Some modern computers also include a CD-ROM or DVD-ROM unit where programs or disk files can be inserted. ProgramY can be launched directly from CD or DVD, which act as an external data storage for PC.
Personal computers were first introduced on the market at the end of 70 years. Their abilities and speed remained compared to modern PCs, but because of the progress they represented, their popularity grew rapidly and the PC began to develop for everyday use of the household. Computer games and programs have been developed that could be used on household computers, which further opens the market for these devices. Until 2002, one billion worldwide has been sold since the first performance.