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Computer History |
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What is a Programming Language? What is a Computer? What is ASP Active Server Page?
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Computer
What Is Computer? A computer is a device that accepts information (in the form of digital data) and manipulates it for some result based on a program or sequence of instructions on how data is to be processed. Complex computers also include the means for storing data (including the program, which is also a form of data) for some necessary duration. A program may be invariable and built into the computer (and called logic circuitry as it is on microprocessors) or different programs may be provided to the computer (loaded into its storage and then started by an administrator or user). Today's computers have both kinds of programming. Most histories of the modern computer begin with the "Analytical Engine" envisioned by Charles
Babbage following the mathematical ideas of George Boole, the
mathematician who first stated the principles of logic inherent in today's digital computer. Babbage's assistant and
collaborator, Ada Lovelace, is said to have introduced the ideas of program loops and
subroutines and is sometimes considered the first programmer. Apart from mechanical calculators,
the first really useable computers began with the vaccuum tube, accelerated with the invention
of the transistor, which then became imbedded in large numbers in integrated circuits,
ultimately making possible the relatively low-cost personal computer. Recently, computers and programs have been devised that allow multiple programs (and computers) to work on the same problem at the same time in parallel. With the advent of the Internet and higher bandwidth data transmission, programs and data that are part of the same overall project can be distributed over a network and embody the Sun Microsystems slogan: "The network is the computer." |
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