By: ronna
Brief History of Computers
The word "computer" was used during 1613. This was used to address a person who works on computations and calculations. This term continued to be used even until the mid-20th century. However, before the end of the 19th century, people had been using this word in reference to anything that process computations or calculations. From then on, computer was used to describe any machine that processes data through a set of commands.
Today, computers are more sophisticated since they function according to integrated circuits making them billion times better in data processing. Modern computers are smaller and work faster compared to earlier versions. New breed of computers can now process data over shorter period of time and occupy smaller portion of space in your offices and homes. As time passes, computers come up with more and more designs and features. In fact, some computers are as small as wristwatch that is powered by a regular watch battery. Additionally, personal computers and other computer-integrated devices emerge to address the growing demand for faster and more efficient computing devices.
Modern computer started in two technologies, namely programmability and automated calculation. During earlier times, the only documented mechanical device which applied the technology of programmability was the theater made by Hero of Alexandria.
Types of Computers
Since several applications and designs were created, experts classify computers into three major categories.
Microcomputers – These computing devices are the most widespread computers these days. Microcomputers are commonly used in schools and at work. These computers are termed microcomputer because they use single chip microprocessors. Among the computing devices that fall into this category are the desktop computers, laptops, PDA's, notebook computers, tablet PC's and programmable calculators. Netbooks and palmtop computers also belong to this classification.
Minicomputers – These are also referred as the midrange computers which fall in the category of multi-user computing systems. They are in between the ranges of the biggest multi-user systems and the smallest single-user devices. Among the known minicomputers are the ones from IBM, Hewlett-Packard and Sun Microsystems. These include POWER, Itanium and SPARC-based structures.
Mainframe computers – these computers have the capacity to process huge amounts of data in short period of time. Most government agencies, corporations and banks use this kind of computers. These computing devices are attuned with the structures of the computers made during the 60s. This implicates that both classification and processing capability are affected. The only distinction between mainframe and the supercomputer is that the latter relay all its power in executing several programs fast while mainframe systems use its capability to execute many programs simultaneously.
Uses of Computers
Aside from just computing and data processing, computers nowadays have established more functions such as the following:
Word Management and Processing – Computers these days use software that automatically revise or correct misspelled words and erroneous grammar.
Internet – Through the use of computers, people can now search the World Wide Web and access numerous amounts of information. This also allows sending and receiving electronic mail (email), and video conferencing.
Other uses include mathematical computations, digital video and audio composition, telecommunications, travel, mapping and business security.
About the Author
Ronna Arguelles is a professional SEO writer.Click here to see here blog.
(ArticlesBase SC #1322359)
Article Source: http://www.articlesbase.com/ - Computers – Making Things Easier and Convenient
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