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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. More on [ Computer software ]
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Dayton,OH | LexisNexis | Consulting Software Eng | #tweetajob | http://bit.ly/4JfAYP | #jobs
tj_cin_oh_sdet (Test Jobs-CIN) Wed, 23 Dec 2009 23:54:29 -0000
Dayton,OH | LexisNexis | Consulting Software Eng | #tweetajob | http://bit.ly/4JfAYP | #jobs
Software Tool For Wordpress: The software tool I need created... Takes just 5 minutes to set up your site. With.. http://rly.cc/eSZd6
keralajobs12 (keralajobs12) Wed, 23 Dec 2009 23:54:17 -0000
Software Tool For Wordpress: The software tool I need created... Takes just 5 minutes to set up your site. With.. http://rly.cc/eSZd6
Read Post: TrueCrypt- Free Open Source Software (http://cli.gs/jWnTt) http://cli.gs/jWnTt #Open_Source #Software
walkerbunny (Shailu) Wed, 23 Dec 2009 23:54:04 -0000
Read Post: TrueCrypt- Free Open Source Software (http://cli.gs/jWnTt) http://cli.gs/jWnTt #Open_Source #Software
¿Nadie usa algún software para hacer casos de uso? :S
MauricioAedo (Mauricio Aedo S.) Wed, 23 Dec 2009 23:53:58 -0000
¿Nadie usa algún software para hacer casos de uso? :S
RT @roidude ComputerWorld names View 4 Clear Choice Test winner for VDI software. http://tinyurl.com/y9p8hom
virtualtacit (Joe Kelly) Wed, 23 Dec 2009 23:53:56 -0000
RT @roidude ComputerWorld names View 4 Clear Choice Test winner for VDI software. http://tinyurl.com/y9p8hom
@angelo_cioffari Apple encanta por su sobrio diseño y por un software muy detallista. No, yo sé que no eres fanatico...
totorocan (Antonio GarcÃa) Wed, 23 Dec 2009 23:53:55 -0000
@angelo_cioffari Apple encanta por su sobrio diseño y por un software muy detallista. No, yo sé que no eres fanatico...
Financial Numerical Recipes - Discussion of algorithms and C++ code for advanced financial calculations by Bernt Arne Ødegaard.
Meta Description: [ Financial Numerical Recipes in C ++. ]
Micro Economy Model Software - Mathematic Economic Model for Teachers and Students of marketing and economics.
Meta Description: [ It is a graphical interface that represents mathematical equations based on an
economy theory. Economic variables are shown as equations in order to represent
what the theory means. understand the behavior of the variables related with a micro-economy, a company
trading products and or serv... ]
QuantLib - A free/open-source library for quantitative finance, written in C++ and exported to different languages such as Python, Ruby and Scheme.
Meta Description: [ QuantLib: a free/open-source library for quantitative finance ]
UnRisk - A software tool for the robust, accurate and fast pricing of complicated financial derivatives. It has a C++ kernel, but can be used under Mathematica.
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