ICT Definitions

Peripheral
A hardware component connected to a computer externally
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RAM
(Random Access Memory) Memory which can be read from or written too. It is volatile. Used to hold programs and data that the user is currently working on
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ROM
(Read Only Memory) Memory which can be read from but not written too. Rom is non-volatile. Rom is used to store programs that are frequenly required by the computer such as the 'booting up' program for windows.
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Cache
Special type of memory used by the CPU. It is small, fast and volatile.
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Data
Data does not have a meaning or context.
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Information
Processed data that gives it meaning.
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Database
Storing data in a structured and logical way
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Encryption
Scrambling data to make it secure. Only users with the key and the code will be abe to unscramble and read the data.
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Firewall
Software or hardware that limits the data that can be sent to or from a computer, preventing unauthorised access.
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Backup
A copy of data that is made in case the original data is lost or damaged. The backup can be used to restore the original data.
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Bandwidth
The amount of data being transmitted in a fixed amount of time. Measured in megabits per second.
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Bluetooth
Allows the exchanging of data over a short distance.
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Protocol
A set of rules which govern the way in which data is transmitted between computer networks.
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Router
A router is a device which connects two or more networks together.
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Access Levels
This limits what a user can do on the network by giving the users different levels of access.
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Spam
Unwanted emails.
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Spyware
Malicious software (malware) which is secretly installed on a users computer. It collects pieces of information about the user.
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Internet
The network of networks i.e. all the computers connected together .
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World Wide Web
The information which is held and travels along the internet. The information is held as web pages or files can be downloaded.
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Intranet
A website which is only available for employees or members of an organisation, school or college.
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ISP
(Internet Service Provider) An ISP is a company which provides the user with a connection to the internet for a fee.
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Address Bar
This allows the user to type in the web address or URL.
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Modem
Convetrts digital signals from your computer into anologue signals so they can travel down the phone line.
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VOIP
(Voice Over Internet Protocol) Technology that allows you to make phone calls over the internet.
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Video Conferencing
Communication on a network using sound and video. A high bandwidth is required to ensure the quality of the video conference.
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WAP
(Wireless Application Protocol) A communication protocol for accessing netork services and information using mobile devices.
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Wi-Fi
A medium range wireless technology used t allow devices to connect together.
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Batch Processing
Involves collecting groups or batches of similar data over a period of time and imputting it to a computer system.
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Master File
Information which does not change in the short term is stored in the customer master file. It contains their name, address and pre-prineted meter reading cards.
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Transaction File
Contains the customers account number and the meter reading. It is a temporary file used to update the master file.
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Data Logging
A data logging system automatically collects data over a certain period of time, using sensors without human intervention. Data can be stored over a period of time and then analysed by special or dedicated software.
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Feedback
Computer systems that can monitor their own activity by controlling their outputs according to their inputs , are said to have feedback.
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Embedded Computer
When a computer is used to control a device in the home by using a microprocessor which is inside the device, it is described as an "embedded computer" e.g. Washing Machines.
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CAL
(Computer Assisted Learning) This allows students to learn at their own pace.
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VLE
(Virtual Learning Environment) A tool used to deliver courses using technoogy. It also allows teachers to asses student work.
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Teleworking
Teleworking is using ICT to work from home.
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Social Networking
Socialising through Internet chat rooms, bulletin board, virtual worlds.
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SET
(Secure Electronic Transaction) A protocol co-owned by Visa and Mastercard. This uses digital signatures and digital certificates.
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Digital Certificate
An electronic identification taht confirms that the user is and authentic person. A bank will issue this certificate which contains information about the user.
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RSI
Repetitive Strain Injury.
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Wizard
A wizard is a user interface which presents the user with a sequence of dialogue boxes that lead the user through a series of well-defined steps.
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NIC
(Network Interface Card) A card slotted into the computers motherboard. Thye are needed if the computer does not have a built-in chip on the motherboard.
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Switch
A switch is a single connection point for a group of computers. The switch is connected to a file server and organises communtication between the file server and the computers connected to it.
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Computer Game
An electronic presentation of a game thet involves interaction with and electronic device containing a processor where feedback can be provided to the user.
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OCR
(Optical Character Recongnition) It allows data to be entered directly into a spreadsheet.
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Thumbnails
Thumbnails are reduced-size versions of pictures or videos.
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Other cards in this set

Card 2

Front

(Random Access Memory) Memory which can be read from or written too. It is volatile. Used to hold programs and data that the user is currently working on

Back

RAM

Card 3

Front

(Read Only Memory) Memory which can be read from but not written too. Rom is non-volatile. Rom is used to store programs that are frequenly required by the computer such as the 'booting up' program for windows.

Back

Preview of the back of card 3

Card 4

Front

Special type of memory used by the CPU. It is small, fast and volatile.

Back

Preview of the back of card 4

Card 5

Front

Data does not have a meaning or context.

Back

Preview of the back of card 5
View more cards

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