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.

FareCatcher - Charityware from Spitting-Image Software. Proactively goes to the web to retrieve the lowest price fares for trips on the dates that you request.
PlanetWare Travel Encyclopedia - Offers comprehensive, searchable tourist attraction data and encyclopedia. Plan travel using 3,000 photos, 2,000 maps, 50,000 in-depth descriptions. A tool for professionals.
Meta Description: [ PlanetWare offers comprehensive, searchable tourist attraction information. Plan a trip using in-depth travel guides, thousands of pictures, and maps. ]
Time Traveler - Class Action provides handheld computer software for business travelers.
Meta Description: [ Palm PDA Software :: World Time for Palm OS ]
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