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iGCSE ICT 0417 Keywords Revisions
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iGCSE ICT 0417 Keywords Revisions
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iGCSE ICT 0417 Keywords Revisions®Bluetooth - correct answer-A wireless technology for exchanging data over short distances.
3G - correct answer-3G 'third generation'. A standard for access technology enabling
connection to the internet using mobile.
4G - correct answer-4G 'fourth generation'. A much faster standard for connection to the
internet than 3G.
Abnormal data - correct answer-Invalid data used when testing a system; this is data that
should not be accepted.
Absolute file path - correct answer-Shows the whole of the path to the file from the root
directory.
Absolute reference - correct answer-In a spreadsheet, an absolute cell will always point to
the exact cell described if it has a dollar sign ($) in the row or column coordinate, or in both.
For example, =$A$5/A2.
Actuator - correct answer-Device used to carry out the physical requirements of a computer.
Analogue data - correct answer-Data in its original, physical form. Typically output from a
sensor.
Analogue-to-digital converter - correct answer-Device that changes analogue data to digital
data so that it can be stored on a computer system.
Anchor - correct answer-a type of hyperlink that will take you specifically to a different part of
the web page you are on.
Animation (in presentation software) - correct answer-An effect used on individual elements
on one slide.
Animation using computers - correct answer-Sequence of different pictures which project
movement. CGI (computer-generated imagery) is the application of computer graphics to
special effects in films and television programmes.
ANPR - correct answer-Automatic number plate recognition.
Applets - correct answer-A small program that is designed to be executed from inside
another program, not from the operating system.
Applications program - correct answer-a type of software that allows you to create many
different types of documents, such as letters, invoices, presentations, web pages and so on.
,Application software - correct answer-Sets of instructions to the computer that allow the user
to do something useful.
Apps - correct answer-Short for application.
Artificial intelligence - correct answer-An expert system that can change the rules by which it
works according to experience of what has happened in previous occurrences.
Aspect ratio - correct answer-The proportional relationship between the width and height of
an image, expressed in numbers as in 14:6.
Audio-conferencing - correct answer-A telephone meeting between multiple callers in
separate locations.
Automated objects - correct answer-Objects that update automatically every time your page
is updated, for example date and time, page numbering, and so on.
Automated teller machine (ATM) - correct answer-Cash point machine used to withdraw
cash or manage a bank account.
Backing store - correct answer-a secondary storage device for data.
Backup file - correct answer-A copy of a file of information which is stored somewhere away
from the computer and can be used to restore the file if the data is lost.
Bandwidth - correct answer-A measurement of how much data can be sent along a
communications channel in a given time, usually per second.
Bar code - correct answer-A series of black and white lines representing a code number,
used in a variety of applications.
Bar code reader - correct answer-Device used to read bar codes - can be fixed or hand-held.
Batch processing - correct answer-The data to be processed is collected together in batches
and is then run at some later more convenient time. The data must not be time sensitive.
Binary code - correct answer-The representation of a number in the binary system, which
comprises only the digits 0 and 1.
Binary number system - correct answer-The base-2 numeral system which represents
numeric values using only two symbols, 0 and 1.
Biometric data - correct answer-records that are used to identify people by a physical
attribute that doesn't change. An example of this would be a database of fingerprints of
known criminals.
, Biometrics - correct answer-The technologies that measure and analyse human body
characteristics for the purpose of authentication. Typically used are fingerprints, eye retinas
and irises, voice and face patterns.
Blog - correct answer-Short for 'web log' - a website with regular entries of commentary,
descriptions of events, or other material such as graphics or video.
Boolean - correct answer-Data that can only take two states and hence can be represented
by 0 or 1.
Botnets - correct answer-Describes a number of internet computers set up to forward
transmissions (including spam or viruses) to other computers on the internet.
Browser - correct answer-A software application for searching and retrieving information
resources on the world wide web.
CAD/CAM - correct answer-Software which allows for the design of an item and then for its
automatic manufacture.
Cascading style sheets (CSS) - correct answer-A style sheet language used for describing
the presentation of a document written in a markup language such as HTML.
CD-ROM - correct answer-Compact disk read only memory - optical storage media.
CD-ROM drive - correct answer-Device used to read CD-rom, CD-R and CD-RW media.
Cells - correct answer-the small rectangular sections on spreadsheets used to enter data
such as text, numbers or symbols and to perform calculations using formulas and functions.
CGI - correct answer-Computer-generated imagery software for creating cartoons.
Changeover - correct answer-The planning of how the new system is to replace the old
system. Should include training/ file construction and hardware and software
implementation. Typical methods are direct/phased/ parallel/pilot.
Chart/graph - correct answer-data taken from spreadsheets can be represented by creating
a graph or chart, such as a bar, pie or line graph. You can use different colours, lines and
patterns for more visual clarity.
Chip-and-pin - correct answer-Microchip built into debit/credit cards to provide security when
purchasing.
Cloud - correct answer-we sometimes refer to something being 'in the cloud'. It refers to
software applications and data that are stored online and used through the internet. Cloud
computing means that we don't have to think about where our data is, because with cloud
computing it will be wherever we are.
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