| Computer (computador) is an appliance which can | | | | microprocessor. |
| manipulate data in accordance with a list of | | | | The ALU is for arithmetic and logical operations of |
| instructions. It is a type of data processing system. | | | | the computer while the control unit is for directing |
| Today the computer (computador) has become | | | | the various parts of a computer (computador). Its |
| indispensable in every household and comes in | | | | job involves reading and interpreting the instructions |
| numerous physical forms. The first modern day | | | | of the programs one by one and converting them |
| computer was developed in the mid-20th century, | | | | into control signals for operating other parts of the |
| though the concept of computer (computador) and | | | | computer. |
| various similar machines existed before. It actually | | | | The earlier version of computer (computador) used |
| started in 1837, when `The Analytical Engine`, the first | | | | Magnetic core memory but today it has been |
| fully programmable mechanical computer, was | | | | replaced by the semiconductor memory. The main |
| designed by Charles Babbage. | | | | memory of Computer is divided in two parts, RAM or |
| The Earlier versions were huge and bulky and used | | | | random access memory and ROM or read-only |
| up a whole room. The device EDSAC (Electronic | | | | memory. RAM can be written and read anytime |
| Delay Storage Automatic Calculator) was one of the | | | | through CPU commands. On the other hand, ROM is |
| very first computers that could implement the stored | | | | pre-loaded with software and data that never |
| program architecture. In comparison to them, modern | | | | changes, and it can be only read by the CPU. |
| computers (computador) have tiny integrated circuits | | | | I/O is hardware by the means of which a |
| and are much better in terms of capacity and speed | | | | computer(computador) can receive information from |
| as well as accuracy. Today`s tinier version can even | | | | the outside world and also sends back results. |
| fit in your wrist watch and are powered from the | | | | Common input devices are the keyboard and mouse. |
| watch battery. Personal computers can be found in | | | | While common output devices include monitor and |
| almost every house today and in various forms. | | | | printer. There are some devices that serve as both |
| They are in fact the icons of the information age. | | | | input and output devices like Hard disk drives, optical |
| What makes computers (computador) highly versatile | | | | disc drives, floppy disk drives etc. |
| and distinguishable from other appliances is that it can | | | | Internet has literary changed our lives. Today people |
| be programmed. A calculator can only calculate, just | | | | can search all types of information on various |
| like a washing machine can only wash, but a | | | | subjects, advertise their company or products pass |
| computer can be programmed to do any kind of job. | | | | information to a large group of people and do much |
| Software programs are a list of instructions that can | | | | more merely by a few clicks of the mouse. Whether |
| be stored and executed by the computer. | | | | you want to search a new home or compare prices |
| A general computer (computador) has four major | | | | of the latest mobile or fill up your college form or |
| sections, the arithmetic and logical unit or ALU, the | | | | read the latest Harry Potter book, everything can be |
| control unit or CU, memory and the interface for | | | | done on the Internet through your computer. |
| input and output devices. These parts of computer | | | | With increase of computers (computador) and its |
| are interconnected by busses. The ALU, control unit, | | | | uses, an increasing number of professions involving |
| registers, and the interface for input and output | | | | computers have also developed. Computer-related |
| devices are collectively known as the central | | | | professions include Electrical engineering, Nanoscale |
| processing unit or CPU. The Early CPUs used to be | | | | engineering Telecommunications engineering, |
| composed of different separate components, | | | | Software engineering, Web design, Desktop publishing |
| however since the 1975; the CPUs are being | | | | and Optical engineering. |
| constructed on a single integrated circuit, the | | | | |