evolution of computers
Advances in the field of information technology in the past 30 years, perhaps more than any other factor, have dramatically changed the way people work. The advent of the computer and the subsequent creation of the Internet has substantially expanded access to information, have allowed almost instantaneous communication around the world and has the computing power in the hands of many people and every individual in a organization

size=18]Zuse Z3[/size]

it is often considered the first general-purpose computer, but this title actually belongs to the German Z3 computer. Also applies to the Colossus, which was used to decipher German code during World War II and destroyed after use to avoid leaving evidence, being recently restored to a British museum. It was completely digital, meaning that its processes and operations executed by machine language instructions, unlike other contemporary computing machines analog processes. Presented in public on 15 February 1946.

The ENIAC was built at the University of Pennsylvania by John Presper Eckert and John William Mauchly, covered an area of 167 m² and operated a total of 17,468 electronic valves or vacuum tubes which in turn allowed to perform about 5000 additions and 300 multiplications per second. Physically, ENIAC had 17,468 vacuum tubes, glass diodes 7,200, 1,500 relays, 70,000 resistors, capacitors 10,000 and 5 million welds. It weighed 27 tons, measuring 2.4 mx 0.9 mx 30 m; 1500 using electromagnetic switches and relays, manual operation required about 6,000 switches, and software program or when required modifications, it took weeks of manual installation.
the computer personal

It is a small, relatively inexpensive computer designed for individual use. The price of a computer of this type ranges from a few hundred dollars to more than five thousand. All are based on microprocessor technology that enables manufacturers to fit an entire CPU inside a microchip.

In businesses and institutions use these machines as word processing, accounting, publishing, spreadsheets and data management applications. At home, have been introduced primarily as machines to play, and then to perform several works more or less in the same style as the companies.

Personal computers appeared in the last years of the 70's. One of the first and most famous was the Apple II computer, introduced by Apple Computers in 1977.

[img = http://www.canal-ayuda.org/a-informatica/ensamblaje/ensamblaje_archivos/ibmpc.jpg]

Quickly, IBM PC has become the most popular personal computer and other computer manufacturers and operating systems have been marginalized in the international market, forcing himself to make machines "clone" of this. His first machine was cloned Compaq Portable.
oné Computer Portátil

In 1983 Commodore introduced the first color computer Commodore SX-64.

Over the years, IBM has lost much of his influence in the evolution of computers. Is introduced in the 1985 Microsoft Windows 1.0