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computer science paloma cruz parra janneth gonzález b-1 b ing germán a gonzález curiel informática 1 volumen 1 nº 1 24/08/10 what is system what is a computer what is a file and more learn a compu hardware software and some elements of the computer bout ter

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system a computer system consists of hardware components that have been carefully chosen so that they work well together and software components or programs that run in the computer computer computer are a programmable machine the two principal characteristics of a it responds to a specific set of instructions in a well-defined manner it can execute a prerecorded list of instructions a program modern computers are electronic and digital the actual machinery wires transistors and circuits is called hardware the instructions and data are called software file a collection of data or information that has a name almost all information stored in a computer must be in a file there are many different types of files data files text files program files directory files and so on different types of files store different types of information informatics is the science of information the practice of information processing and the engineering of information systems informatics studies the structure algorithms behavior and interactions of natural and artificial systems that store process access and communicate information 1

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hardware hardware is a general term for the physical artifacts of a technology it may also mean the physical components of a computer system in the form of computer hardware hardware historically meant the metal parts and fittings that were used to make wooden products stronger more functional longer lasting and easier to fabricate or assemble modern hardware stores typically sell equipment such as keys locks hinges latches corners handles wire chains plumbing supplies tools utensils cutlery and machine parts especially when they are made of metal 2

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software computer software or just software is the collection of computer programs and related data that provide the instructions telling a computer what to do the term was coined to contrast to the old term hardware meaning physical devices in contrast to hardware software is intangible meaning it cannot be touched software is also sometimes used in a more narrow sense meaning application software only sometimes the term includes data that has not traditionally been associated with computers such as film tapes and records 3

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elements of the computer cpu the central processing unit cpu or the processor is the portion of a computer system that carries out the instructions of a computer program and is the primary element carrying out the computer s functions it is the unit that reads and executes program instructions the data in the instruction tells the processor what to do ram memory random-access memory ram is a form of computer data storage today it takes the form of integrated circuits that allow stored data to be accessed in any order i.e at random random refers to the idea that any piece of data can be returned in a constant time regardless of its physical location and whether or not it is related to the previous piece of data rom memory read-only memory usually known by its acronym rom is a class of storage media used in computers and other electronic devices 4

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computer parts monitor cpu keyboard mouse printer speakers

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microsoft office word is a word processor and was previously considered to be the main pro gram in office its proprietary doc format is considered a de facto standard although word 2007 can also use a new xml-based microsoft office-optimized format called .docx which has been standardized by ecma international as office open xml and its sp2 update will support odf and pdf excel forms is a spreadsheet program which originally competed with the dominant lotus 1-2-3 but eventually outsold it it is available for the windows and mac plat outlook is a personal information manager from microsoft available both as a separate application as well as a part of the microsoft office suite the current version is microsoft outlook 2010 for windows power point is used by business people educators students and trainers from microsoft office 2003 to 2008 for mac microsoft revised the branding to emphasize powerpoint s place within the office suite calling it microsoft office powerpoint instead of just microsoft powerpoint publisher is a desktop publishing application from microsoft it is an entrylevel application differing from microsoft word in that the emphasis is placed on page layout and design rather than text composition and proofing.

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horoscopes aries is the first sign of the zodiac and it signifies unlimited energy enthusiasm energy and adventurism the characters of courage come naturally to all arians it is no wonder that this sign is the most exciting and powerful of all other sun signs all arians are endowed with such wonderful attributes as confidence determination will power and dedication people who are born under taurus zodiacal sign possess very significant characters that are special to only this sign very stubborn adamant influential practical pragmatic and smart a typical taurus is a sign of stability and conformity these people can reach very high success levels due to their power of will and perseverance all these positive traits make them extraordinarily powerful and energetic of all the zodiacal signs gemini is perhaps the most interesting and exciting sign with its own special characters it is mot only extremely active but also friendly sign with its pleasing persona and demeanor other people simply love and adore gemini persons just because of their out going nature all gemini people simply love to talk endlessly about any topic under the earth however their chatting has a lot of meaning to it as they love to choose a special topic interest to all concerned parties all gemini people possess a highly innovative mind and thinking attitude they are too intellect and intelligent to indulge in loose and useless talk being extremely imaginative and trustworthy people born under this special sign can set up instant personal equation with others.

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a typical cancer person is an acutely sensitive individual and secretive cancer sign is also very private and hidden with its own likes and dislikes a cancer person can hide his or her emotions with utmost secret a person who is born under this sign is too emotional and nostalgic with old memories haunting the conscience all the time hence cancer people can be too fragile and mentally sensitive to any situation that demands mental stability lion is the king of the forest and he can survey the entire forestland with an aristocratic outlook most demanding and dominating of all the animals is the lion because of its imposing presence it is no wonder to see that people who are born under leo sun sign are the most dominating of all sun signs leos are the most expressive creative and immensely out going of all people just look at a leo person and you will see how creative and inventive they are a typical leo can be very attractive imposing and magnetic in looks and demeanor of all the sun signs virgo is the most colorful and glamorous it is the only sign that is feminine in character people feel that a feminine character is weak and fragile however this feminine character is neither weak nor meek she is rather very strong and demanding she is also highly creative and inventive in her personality people born under this sign are extremely smart erudite refined and scholarly happy birthday cinthia carolina zindy september 1st

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