sensor, an input device used to measure environmental conditions, data logging, collecting and storing of data at regular, fixed intervals over a period of time, period of logging, the time taken between the first reading being taken and the last reading being taken, logging interval, the time between one reading being taken and the next reading being taken, calibrate, to correlate the readings of a sensor against those of a known standard, feedback, the modification or control of a process or system by its results or effects, field, can be fixed or variable length, compression, used to make a file fit in a smaller space in backing store, encryption, used to prevent use of stolen data, password, used to limit access to data, virus, infects computer systems and can damage data, transaction file, needs to be sorted before merging with a master file, key field, uniquely identifies each record in a database, keyboard, an input device used to enter text, local area network (LAN), two or more computers connected together in one building or site, megabyte, unit of storage - 1024 kilobytes, mouse, an input device used to point and click, optical mark recognition (OMR), Reads marks on paper - used for lottery forms and multiple choice tests, validation, checking of data on input to see if it is sensible or reasonable, verification, checking of data on input to see if it is correct, web browser, used to view html files or internet pages

Computing (ICT) terminology

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