National Teaching and Learning Change ProgrammeInformation and Communication Technology:
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• interrupt
  A signal, generated by a source such as an input or output device or a systems software routine, which causes a break in the execution of the current routine. Control passes to another routine in such a way that the original routine can be resumed after the interrupt. This enables peripherals to operate independently, indicating to the operating system, with an interrupt, when they need to communicate with the central processor. An example is a keyboard, which only sends data to the central processor when a key is pressed, which generates an interrupt.
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• intranet
  A communication system providing similar services to the internet, but only within a particular company or organisation. An intranet provides an organisation with services which are only accessible by authorised users and has good security for confidential information. It allows secure email communication and the distribution of information using technology similar to the web. It may use the internet to allow access by its authorised users anywhere in the world. This internet access to an intranet is sometimes called an extranet.
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• invoke
  To invoke a method is to call it from a different part of the program.
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• IP address
  Each computer linked to the internet has a physical address, a number called its IP address. The IP address (internet protocol address) uniquely identifies the physical computer linked to the internet. The domain name server converts the domain name into its corresponding IP address. Also known as IP number.
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• IP number
  Each computer linked to the internet has a physical address, a number called its IP address. The IP address (internet protocol address) uniquely identifies the physical computer linked to the internet. The domain name server converts the domain name into its corresponding IP address. Also known as IP address.
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• italics
  A typeface with slanted characters, used for emphasis.
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• iteration
  Iteration is the process of repeating a sequence of steps. Iteration will involve a loop which is repeated (iterated) until the required answer is achieved. The first time the instructions in the loop are executed is the first iteration.