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94 Cards in this Set
- Front
- Back
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Biometric Template |
Measurements taken from a biometric sample |
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Biometrics |
Use of fingerprints, retina scans, or other body features as an authentication mechanism |
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Bit |
A single binary digit (a 1 or a 0). The smallest unit of storage inside a computer |
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Bit depth |
Refers to the number of colours in an image |
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Bit rate |
Amount of data used to represent a single sample in a video or audio file |
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Bitmap graphics |
graphics composed of rectangular grids of pixels |
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Black boxes |
closed system whose internal operation cannot be inspected |
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Black list |
List of banned web sites in a filtering system |
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Blade servers |
servers housed on individual circuit boards in a modular system |
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Blended learning |
mix of traditional teaching techniques and e-learning techniques |
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Blog |
Web page where entries are stored chronologically, like a diary or journal |
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Blue screen |
technique used to replace part of a video image with computer graphics |
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Bluetooth |
short range, low bandwidth wireless tech often used for mobile phone headsets or earphones |
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blu-ray |
optical secondary storage device capable of storing 16GB+ |
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BMP |
lossless file format for audio |
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boolean logic |
logic in which clauses can have one of two states - such as yes or no, true or false |
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boolean operators |
AND, OR, and NOT operators used in a query |
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botnet |
group of zombie computers under the control of a criminal |
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bounce rate |
percentage of users who visit a web site but immediately leave it |
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bps |
bits per second |
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braille keyboard |
special keyboard designed for users with eyesight problems |
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braille printer |
special printer that can produce braille text |
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breadcrumb trails |
feature of a web site to help user navigation |
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broadband |
high speed network connection |
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browser |
software used to view web pages |
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browser compatibility |
see page 205 of textbook |
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brute force attack |
attempt to break a password by trying all possible combinations of letters, numbers and symbols |
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brute force searching |
see term: searching |
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buffer |
temp storage area used to store video or audio data ready for playing |
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bug |
error or mistake in a program |
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bug tracking system |
used to track and manage bugs in a piece of software |
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bulk email |
see spam |
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business case |
analysis of the benefits and problems of a proposed IT project |
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Business Software Alliance |
organization that works to reduce illegal copying of software |
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Business-to-Business |
e-commerce conducted between two businesses, such as a business and their suppliers |
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Business-to-consumer |
e-commerce conducted between a business and their customers, for example, online shopping |
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byte |
storage unit: 8 bits, enough to store a single ASCII text character |
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C2C |
see term: consumer to consumer |
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cable |
see term: DSL/ cable |
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cache |
storage area for frequently used info to speed up access |
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CAD |
see term: computer aided design |
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camera |
common input device in robotics |
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Capability Maturity Model Integration |
quality assurance method that describes an organisation's level of maturity |
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CAPTCHA |
system designed to create text that is unreadable to a computer but understandable to a person, to reduce spam |
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car crash model |
used to predict the results of car crashes |
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cardinality |
property of a relationship in an Entity Relationship Diagram |
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Carpel Tunnel Syndrome |
injury caused by overuse or incorrect use of a computer |
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Cascading style Sheets |
tech to specify styling and formatting info for web pages |
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CAVE |
Cabe Automated Virtual Environment |
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Cave Automated Virtual Environment |
Form of virtual reality which projects images on the walls surrounding a user |
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CD-ROM |
optical secondary storage device capable of holding 650-700MB of data |
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cell format |
in spreadsheets, the properties of a cell, colour font and type |
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cell range |
in spreadsheets, reference to a range of continuous cells. |
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cell reference |
in spreadsheets, a combination of row number and column letter to refer to a single cell |
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Central Processing Unit (CPU) |
hardware responsible for processing all instructions the computer runs |
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centralized database |
database in which all data in stored in one centralized location |
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centralized processing |
single computer with multiple processors working on a task |
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Certificate Authority |
organization that issues digital certificates to individuals and companies |
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CFD |
Computational Fluid Dynamics: a technique used to model airflow in computer models |
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CGI |
Computer Generated Imagery |
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chaining |
use of logical statements to come to a conclusion |
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changeover |
moving from an old system to a new IT system |
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character check |
ensuring a field contains only the specified character types |
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check digit |
way of checking mathematically if a item of data has been correctly entered |
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Children's Internet Protection Act |
US law requiring Internet filtering in US most schools and libraries |
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Chinese Room |
thought experiment dealing with the idea of knowledge |
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chip and pin |
systems designed to reduce credit card fraud by requiring the user to authenticate themselves at the point of sale |
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CIPA |
Children's Internet Protection Act |
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ciphertext |
result of encrypting plaintext |
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citation |
acknowledge to a piece of work used as a source |
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citizen journalism |
news reporting by everyday citizens using mobile tech, rather than traditional media |
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clamps |
Common output device in robotics |
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claws |
common output device in robotics |
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Click Thought Rate |
percentage of users who click on an advert after seeing it |
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client (person) |
person or organization who commissions an IT project |
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client (computer) |
computer on a network that uses services provided by a server |
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client-server |
network system that uses servers to store data centrally and client computers to access them |
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climate mmodel |
used to predict possible future climate change |
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clinical decision support system |
expert system for medical diagnosis |
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clock speed |
speed of a processor, in ticks per second |
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cloning |
image effect used to copy on part of an image to another |
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Closed Circuit Television cameras |
see page 300 |
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closed source |
software whose source code is not publicly available |
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cloud computing |
system whereby application software and data are stored on a remote Internet server |
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CMMI |
Capability Maturity Model Integration |
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codes of conduct |
professional guidelines created by bodies such as the ACM and the BCS |
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collaborative software |
application software to let users work together on projects even if they are geographically remote |
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colour balance |
graphics filtering for altering the tones and intensities of colours in an image |
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colour depth |
bit depth |
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colour levels |
graphics filtering for altering the tones and intensities of colours in an image |
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colour management |
→ colour synchronisation |
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colour profile |
used as part of colour synchronization to specify how a device reps colour. |
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colour synchronization |
ensuring printed output colours accurately match those on the screen |
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Comma Separated Values |
file format for transferring data which stores fields and records in a plain text file |
