Today the computer (PC) has become essential in every household and comes in various physical forms. The first day modern computer was developed in the middle of the 20 th century, although the concept of computer (PC) and several similar machines existed before. It really began in 1837, when " " The Analytical Engine, the first fully programmable computer mechanic, was designed by Charles Babbage.
The Earlier versions were huge and bulky and used a whole room. The device EDSAC (Electronic Delay Storage Automatic Calculator), was one of the first computers that could implement the stored program architecture. Compared with them, modern computers (PC), are tiny integrated circuits and are much better in terms of capacity and speed as well as accuracy. Today s tinier version can still fit in your wrist watch and are generated from the clock battery. Personal Computers can be found in almost every home and today in various forms. They are, in fact, the icons of the information age.
What makes computers (PC) highly versatile and differentiated from other devices is that it can be programmed. A calculator can only calculate, as well as a washing machine can wash, but a computer can be programmed to do any kind of work. Programs software is a list of instructions that can be stored and executed by the computer computer.
A general (computer) has four major sections, the arithmetic and logic unit or ALU, the control unit or CU, memory and the interface of entry and output devices. These pieces of computers are connected by buses. The ALU, control unit, records, as well as the interface for input devices and output are collectively known as the central processing unit or CPU. The Early CPUs used to be composed of different components separated, but since 1975; the CPUs are built on a single integrated circuit, the ALU is microprocessor.
The arithmetic and logical operations to the computer as the control unit is to guide the Several parts of a computer (PC). The task involves reading and interpreting the instructions of the programs one by one and converting them into control signals to operate other parts of the computer.
The previous version of the computer (PC) used Magnetic core memory, but today he was replaced by semiconductor memory . The computer& 39;s main memory is divided into two parts, or random access memory RAM and ROM, or read-only memory. RAM can be written and read at any time by CPU commands. Furthermore, ROM is pre-loaded with software and data that never changes, and that can only be read by CPU.
I / O hardware is the means by which a computer (PC) can receive information from the outside world and also sends the returns the results. Common input devices are the keyboard and mouse. Although common devices include output monitor and printer. There are some devices that serve as input and output devices such as hard drives, optical disk drives, floppy disk drives literary etc.
Internet has changed our lives. Today people can find all kinds of information on various subjects, advertise your company or products pass information to a large group of people and do a lot more for only a few mouse clicks. If you want to search for a new home or compare prices of the latest mobile or fill your form college or read the latest Harry Potter book, everything can be done on the Internet through its computer.
With increase of computers (PC) and its uses, a growing number of professions that involve computers also have developed. Computer-related professions include electrical engineering, engineering Telecommunications Nanoscale engineering, software engineering, web design, editing and Optical Desktop engineering.
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This article can be accessed in the language of Article Portuguese section of the page www.polomercantil.com.br / computer-pc.php Roberto Sedycias works as a consultant in IT www.PoloMercantil.com.br brant jacqualine
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