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abacus

abacus  

An ancient device for performing arithmetic calculations by sliding beads along rods or in grooves. Despite the spread of electronic calculators and computers, the abacus is still widely used in the ...
Alan Turing

Alan Turing  

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Overview Page
(1912–1954)British mathematician, who introduced the concept of the Turing machine.Born in London, he was educated at King's College, Cambridge, where he was elected to a fellowship in 1936. In the ...
algorithm

algorithm  

A documented series of steps which leads to the transformation of some data. For example, in order to calculate the sum of a series of numbers a possible algorithm would involve repeatedly adding the ...
ALU

ALU  

Abbrev. for arithmetic and logic unit. A portion of the central processor that generally forms functions of (usually) two input values and produces a single output result. These functions usually ...
analog/digital devices

analog/digital devices  

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Analog devices model the world by using one continuous variable to represent another. Familiar examples include dials that measure a quantity such as speed, pressure, or current by the angle ...
animal machine

animal machine  

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Overview Page
Analogies drawn between animals and both machines and human beings, on the one hand, and directly between machines and human beings, on the other, have been fruitful in the life ...
archive

archive  

A collection of files which are often compressed and which are usually available through the use of anonymous FTP. Such files are found in FTP servers or file servers. A typical archive might contain ...
artificial intelligence

artificial intelligence  

The theory and development of computer systems able to perform tasks normally requiring human intelligence, such as visual perception, speech recognition, decision-making, and translation between ...
automatic teller machine

automatic teller machine  

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Subject:
Law
(ATM)A computer terminal available to the public to dispense cash and other banking services when a valid ATM/debit/credit card is inserted and verified by entering a Personal Identification Number.
automation

automation  

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Subject:
History
The use of automatic machinery and systems, particularly those manufacturing or data‐processing systems which require little or no human intervention in their normal operation. During the 19th ...
Bill Gates

Bill Gates  

1955– )US computer entrepreneur, who became the richest man in the world.Born in Seattle, Washington, Gates was educated at Harvard. His career in computers began when he founded Microsoft at the age ...
BIOS

BIOS  

Acronym for basic input/output system. Firmware permanently resident in microcomputer systems that executes as the first stage of a cold boot. It verifies and initializes the various hardware ...
bit

bit  

Either of the digits 0 or 1 as used in the binary notation. Bits are therefore the basic unit of information in a computer system.
bluejacking

bluejacking  

Is a process of sending a version of spam using Bluetooth technology. It involves mobile phone users who are within Bluetooth communication distance of another user sending a business card to the ...
bluesnarfing

bluesnarfing  

An attack on a mobile phone using Bluetooth technology that makes illegal access to the data on the phone
boot

boot  

To start a computer by turning the power on. Specifically, to invoke a bootstrap, especially to read from backing store the operating system of a computer and load it into the empty memory.
boot disk

boot disk  

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Overview Page
Subject:
Law
A floppy disk or CD that contains the files needed to start an operating system. A special boot disk (often called a system rescue disk) can be created that will allow a computer to boot even if it ...
buffer

buffer  

An area of memory where data is stored, either before it is sent into a network to some device such as printer, or before being read by a computer as part of the processing of the data.
bulletin board system

bulletin board system  

(BBS)A teleconferencing system that allowed its users to post notices that they wished seen by other users on a variety of topics, to read the notices left by previous users, and to download software ...
byte

byte  

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Overview Page
A subdivision of a word in a computer, it usually consists of eight bits. A kilobyte is 1024 bytes (not 1000 bytes). A gigabyte is 230 = 1 073 741 824 bytes.

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