CMOS - Complementary metal-oxide semiconductor, Operating system - software that provides an environment in which applications can run, Graphical - What does the G in GUI stand for?, Command line - what does the CL Interface stand for?, Icon - small picture or symbol used to represent an application on a screen, WIMP - What is the menu, icons, pointer and windows style of visuals called, Pinch - actions by fingers to carry out zooming or enlarging on a touchscreen, Rotate - actions by fingers on a touchscreen to move the image to a different angle, Memory manager - part of the operating system that controls memory, Optimisation - function to make the system run more efficiently, library - a tested and ready to use routine available in the programming language that can be used in the program, device driver - software that communicates with the operating system and translates data into a format understood by the device, utility - parts of the OS that carry out certain functions such as virus checking, defragmentation or disk formatting, diskformatter - utility that prerpares the disk to allow data to be stored and retrieved, dynamic link - a link between a library and another program that allows it to run code from the library when the program needs it, antivirus - software that quarantines and deletes files or programs infected by a virus. , Heuristic checking - checking software for behaviour that could show it is a virus, quarantine - isolating a program that might be a virus from changing files or connecting to the internet, false positive - a program labelled as a virus by mistake or its behaviour when it is not, disk defragmenter - utility that reorganises sectors on a hard disk so that files can be stored as contiguous blocks, disk content - utility that analyses disk drives for empty space, compression - using algorithms and maths to convert bit patterns into smaller numbers so that files take up less space. , contiguous - items next to each other,

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