The past and the present computer

Posted by Play | Posted in , | Posted on 03:00

Computer (computador) is a device that displays data from a list of instructions can manipulate. This is a kind of data processing.

Today's computers (computador) has become indispensable in every home and is available in numerous physical forms. The first modern computer was the focus of the 20th century, if developed the concept of computer (computador) and several similar machines before. It actually started in 1837, when"The Analytical Engine", the first fully programmable mechanical computer designed by Charles Babbage.

Earlier versions were large and bulky and used an entire room. The device EDSAC (Electronic Delay Storage Automatic Calculator) was one of the first computers that could implement the stored program architecture. Compared to them, today's computers (computador) tiny integrated circuits and are much better in terms of capacity and speed and accuracy.Today `s tinier version can also be in a wrist-watch and be powered from the battery of the watch list. PC can be found in almost every home today and in various forms. They are indeed the icons of the Information Age.

What makes the computer (computador) is very versatile and different from other devices is that they can be programmed. A computer can calculate only wash as a washing machine only, but a computer can be programmed to do any kind of work.Software programs are a list of instructions that can be stored and executed by the computer.

A general computer (computador) has four main sections, the arithmetic-logic unit or ALU, the control unit or CU, memory and interface devices for input and output. These computer parts are connected by bus to each other. The ALU, control unit, registers, and the interface for input and output devices are collectively known as the Central Processing Unit or knownCPU. Early the CPU used to assemble several distinct elements, however, built from the year 1975, the CPUs on a single chip, the microprocessor.

The ALU for arithmetic and logical operations of the computer, while the control unit for managing the various parts of a computer (computador). Its task is to read and interpret the instructions of the programs one by one and convert them into control signals forUse of other parts of the computer.

The previous version of computer (computador) uses the base memory, but now has been replaced by semiconductor memories. The computer's main memory is in two parts, RAM, or RAM and ROM or read only memory is divided. RAM can always read and written by command of the CPU. On the other hand ROM is preloaded with software and data that never changes, and can only be read byCPU.

I / O hardware with the means that might be a computer (computador) information received from the outside world and sends the results. Input devices are the common keyboard and mouse. While the common output devices include monitor and printer. There are some devices that serve as both input and output devices such as hard drives, optical drives, floppy drives, etc.

The Internet has changed our literary life. Today, people can buy all sorts of information on researchvarious topics, advertise their company or product information, go to a large group of people and do much more, only a few clicks of the mouse. If you are looking for a new home or the prices of the latest cell phone or send the Form College or read the last book of Harry Potter, anything can be done to compare the Internet with your computer.

With the increase of computer (computador) and its applications, a growing number of occupations with computers haveoccupations developed. computers include electrical engineering, Nanoscale engineering, telecommunications engineering, software engineering, web design, desktop publishing and Optical Engineering.

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