National Teaching and Learning Change ProgrammeInformation and Communication Technology:
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• ethernet
  A popular general purpose local area network. Different types of computer systems can use the network, even at the same time. The transmission rate is usually 100 Mbits/sec.
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• evaluate
  To calculate the value of an expression when the values of the variables are known.
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• event
  An external change which is notified to the program by the operating system, e.g. a key being pressed or a mouse button being clicked.
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• executable file
  A binary file which is the result of a program being compiled. This is the program which is actually run, or executed, by the computer.
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• execute
  To execute a program is to run it.
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• exit
  When a subprogram (or routine, or function) has completed its task it must transfer control back to the calling program, which can only continue from its calling position. This is generally done by a return (or exit) statement in the subprogram. A subprogram may have more than one return instruction.
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• expansion card
  Expansion cards are usually interface boards but can also provide extra facilities such as a small hard disk drive or a co-processor. The expansion cards fit into expansion slots.
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• expansion slot
  A socket which is provided in a computer to allow additional components, e.g. additional disk drives and network interfaces, to be added to the computer later. These sockets are also called expansion slots. The more slots that are provided, the greater the number of extra components that can be added.
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• export
  To create a data file using one piece of software so that it can be read by a different piece of software. Import is the corresponding read process to accept a file produced by some other software.
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• eXtensible Hypertext Markup Language (XHTML)
  The next generation of HTML, combining HTML and XML.
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• eXtensible Markup Language (XML)
  XML is a standard for creating mark-up languages which describe the structure of data. Website authors can use this to create their own, user-defined, tags.
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• extract
  When a file or files are compressed to reduce their size, the process of uncompressing them is known as extracting the files.