Input is the capturing of data, process is converting the data into information and output is the information produced
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Central Processing Unit (CPU)
The important part of a computer system where most calculations are carried out
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Arithmetic and Logic Unit (ALU)
Where calculations are done
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Control Unit
Provides the means of communicating with the machine
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Encoding
Used by computers to convert the data into machine readable form
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Coding
Some data is coded on collection before being entered and this changed the original data into a shortened version by assigning a code
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User Interface
The link between the user and the technology that they are using; involves both hardware and software
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Graphical User Interface
Uses icons and pictures that are easily understood by the user and can be clicked using an input device
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Computer Networking
Linking two or more computing devices together for the purpose of sharing data, communicating,software and peripherals
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Local Area Network (LAN)
Usually covers a single site and could be linked by the use of cables
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Wide Area Network (WAN)
Covers a large geographical area and could be linked by cables, microwave or satellites
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Metropolitan Area Network
Covers an area like a town or city and could be connected by cables, microwave or satellites
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Hub
Small,simple network device that allows multiple computers to communicate. Hubs are an inexpensive piece of network equipment often found in home wired networks and small businesses
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Router
Hardware device (wired or wireless) that joins networks together at the network protocol layer
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Network Switch
Hardware device that joins multiple computers together at the data like network protocal layer
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Internet
A large group of interconnected computers around the world that allow the sending and retrieval of information from one computer to another; sometimes described as a network of networks
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World Wide Web
A collection of multimedia resources accessible via the internet
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Transmission Control Protocol
A protocol to manage the assembly of data into packets transmitted between computers over the internet; ensures reliable transmission; used along with internet protocol
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Internet Protocol
A protocol which directs data from one computer to another
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Protocols
A set of known rules that govern the communications between computers on a network
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Malpractice
When an employee goes against the company ICT code of practice
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Crime
When individuals or organisations break the law through using computers to illegally access a computer system
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Virus
A piece of malicious code that is written by programmers and use to corrupt data and systems. It comes in different forms, such as trojans, logic bombs and worms
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Algorithm
List of instructions for solving a problem; in ICT and computer science, usually means a small procedure that solves a recurrent problem
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Security Attack
Any action that compromises that security of data held by the organisation
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Security Mechanism
Mechanism that is designed to detect, prevent or recover from a security attack
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Firewall
Acts as a barrier between the public internet and your private computer or network, and blocks threats including some viruses
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Anti-virus Software
Continuously scans for viruses, including trojans and worms and can be set to run at particular times of the day
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Security Service
Service that enhances the security of the data-processing systems and the data transfers of an organisation
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Computer Outage
When an organisation's computer system is interrupted by some form of disaster including power cuts, fire, flood and terrorist attack
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EFTPOS
Technology that enables instant, automatic payment directly from the customer's bank account when a debit card is used
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Other cards in this set
Card 2
Front
The important part of a computer system where most calculations are carried out
Back
Central Processing Unit (CPU)
Card 3
Front
Where calculations are done
Back
Card 4
Front
Provides the means of communicating with the machine
Back
Card 5
Front
Used by computers to convert the data into machine readable form
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