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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 ]
Si necesitan un software de Gestión cotice en www.softland.mundolaptop.cl o contácteme en ealvarez@softland.mundolaptop.cl... ¡Los espero!
Lizzi_fabi (Elizabeth Ãlvarez) Tue, 05 Jan 2010 02:30:08 -0000
Si necesitan un software de Gestión cotice en www.softland.mundolaptop.cl o contácteme en ealvarez@softland.mundolaptop.cl... ¡Los espero!
@TeleNavSupport Messages go in, but it's a roach motel. Sorry, but you can't debug software going 70MPH.
bluedepth (bluedepth) Tue, 05 Jan 2010 02:30:03 -0000
@TeleNavSupport Messages go in, but it's a roach motel. Sorry, but you can't debug software going 70MPH.
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APECS - FTP site for Ian McConnell's MAPLE programs.
Code to Compute Heights on Elliptic Curves - Magma implementation of Silverman's algorithm to compute the canonical height on an elliptic curve over a number field or function field, by Martine Girard.
EIS - Software for computing Fourier coefficients of Eisenstein series attached to lattices by M. Kuss and J. Bruinier. Binaries for x86-Linux.
Ellipsa - Includes Primo, an implementation of ECPP, and CPG, class polynomial builder.
Meta Description: [ Ellipsa Homepage ]
Heegner Tools - Peter Green's Heegner Points package. Requires Linux and Pari/GP 2.1.1 or higher.
Modular Forms Software - HECKE can be used to compute basis of q-expansions and Hecke operators on fairly general spaces of modular forms.
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MWRANK - Mordell-Weil rank of elliptic curves over the rationals, by John Cremona.
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Periods of Hilbert Modular Forms - A package of PARI programs (v.2.1.1 or higher) for calculations described in Periods of Hilbert modular forms and rational points on elliptic curves by H. Darmon and A. Logan.
TECC - Tiny Elliptic Curve Calculator, by Masanari Kida. Requires KASH 2.2.
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