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Computer software (or simply software) is the programs and procedures that enable a computer to perform a specific task, as opposed to the physical components of the system (hardware). This includes application software such as a word processor, which enables a user to perform a task, and system software such as an operating system, which enables other software to run properly, by interfacing with hardware and with other software.

The term "software" was first used in this sense by John W. Tukey in 1957. In computer science and software engineering, computer software is all information processed by computer systems, programs and data. The concept of reading different sequences of instructions into the memory of a device to control computations was invented by Charles Babbage as part of his difference engine. The theory that is the basis for most modern software was first proposed by Alan Turing in his 1935 essay Computable numbers with an application to the Entscheidungsproblem. Hally, Mike (2005:79). Electronic brains/Stories from the dawn of the computer age. British Broadcasting Corporation and Granta Books, London. ISBN 1-86-207663-4.

Relationship to hardware


Computer software is so called in contrast to computer hardware, which encompasses the physical interconnections and devices required to store and execute (or run) the software. In computers, software is loaded into RAM and executed in the central processing unit. At the lowest level, software consists of a machine language specific to an individual processor. A machine language consists of groups of binary values signifying processor instructions (object code), which change the state of the computer from its preceding state. Software is an ordered sequence of instructions for changing the state of the computer hardware in a particular sequence. It is generally written in high-level programming languages that are easier and more efficient for humans to use (closer to natural language) than machine language. High-level languages are compiled or interpreted into machine language object code. Software may also be written in an assembly language, essentially, a mnemonic representation of a machine language using a natural language alphabet. Assembly language must be assembled into object code via an assembler.

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DonnaMolinari (Donna Molinari) Sat, 05 Dec 2009 21:15:53 -0000
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dcjavajobs (Washington Post Jobs) Sat, 05 Dec 2009 21:15:52 -0000
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Beginner's Guide To Knoppix: An Introduction To Linux That Runs From Cd (Paperback) recently tagged "software" http://bit.ly/8GuyqO
cheawe (cheawedondang) Sat, 05 Dec 2009 21:15:43 -0000
Beginner's Guide To Knoppix: An Introduction To Linux That Runs From Cd (Paperback) recently tagged "software" http://bit.ly/8GuyqO
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softwarejobsdc (Washington Post Jobs) Sat, 05 Dec 2009 21:15:39 -0000
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Blue Wizard - Includes survey, screenshot, help, and updates for the Blue Wizard deck creation and management software.
Meta Description: [ A program to find the magic card you're looking for. ]

Magic Analyst - A sophisticated freeware database for MtG deck builders and collectors. The Magic Analyst is a virtual library of all the cards ever printed, making it easy to catalog and appraise your collection, find key cards, and construct better decks.

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Meta Description: [ Spellbook -freeware deck constructor, search engine and collectors tool for Magic The Gathering. Macintosh and Windows ]

The Complete Magic Database (CMD) - CMD is a multi-functional information system for the collectible card game Magic: The Gathering. Detailed information on every card and serves as a tool for planning effective decks, and tracking inventory. (Requires Javascript)

The Magic Workstation - A freeware package designed to enable online play of Magic: The Gathering. It also includes features to assist with deck construction and card inventory.
Meta Description: [ Magic Workstation, Card Management and Deck Testing for Magic the Gathering and other CCG Players, Online Play ]

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