Information Technology Revision 2012

itRevision Notes for ICT GCSE 2011 Current and Emerging Technologies Hardw be Hardware is the word mesh to describe devices. These are the parts of the computing machine arrangement you stern touch and see. Hardware embarrasss the parts you hind reverse see from the exterior and also the parts inside the boxes. Examples include monitor/screen, mo engage, motherboard, printer, and keyboard. software system These are programs that the computing machine runs. Programs are stored instructions that tell the computer what to do. Software comes in 2 parts: Applications these do the jobs that the user wants, and operational Systems (OS) these control the ironware so that the user and their applications can easily make use of it. Examples include word-processing, database, spreadsheet, presentation, meshing design, web browser, graphics, photo editing and Operating Systems software such as Windows, Linux, and Mac OS. CPU (Central affect Unit) It is the brains of the computer and it is the most grievous element of the whole computer system. It sits on the Motherboard. Memory It is locate in the IAS (Immediate Access System). thither are two casefuls: * read-only storage (Read Only Memory) * It is computer reminiscence which data has been pre-recorded on * Cant be removed, exclusively READ * Non- volatilisable, for example Windows * RAM (Random Access Memory) * data central processor remembering that can be accessed randomly * Most gross type of memory in computers and other devices * Temporary, fast and volatile as soon as you turn the computer off, you lapse each(prenominal) the data unless you save it first, e.g. Word-processing * More RAM, better quality! Motherboard The main circuit board of a microcomputer. It contains the CPU, memory, BIOS, and more. Video cards - A circuit board fitted to a computer, containing the necessary video memory and other electronics to provide a bi tmap display. Adaptors vary in the resolutio! n (number of pixels) and number of colours they can display, and in the rarify up rate they support. Input...If you want to get a all-inclusive essay, pitch it on our website: BestEssayCheap.com

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