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Published byElvin Stewart Modified over 9 years ago
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A computer system includes a computer, peripheral devices, and software Computer refers to a device that accepts input, processes data, stores data, and produces output Input means to feed information into a computer – Words and symbols in a document – Numbers for a calculation – Pictures What is a computer?
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Data refers to the symbols that represent facts, ideas and objects Processing is the way that a computer manipulates data – performing calculations – sorting lists and numbers – drawing graphs A computer processes data in a device called the central processing unit (CPU) What is a computer?
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A computer stores data so that it will be available for processing Memory is an area of a computer that holds data that is waiting to be processed – Volatile memory – Non-volatile memory Storage is the area where data can be left on a permanent basis What is a computer?
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Computer output is the results produced by the computer – Reports – Documents – Music – Graphs – Pictures An output device displays, prints or transmits the results of processing What is a computer?
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The Personal Computer
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What??? A Mouse in your Pocket?
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Primary Button The primary button is used to Click, Double- Click and Drag. Primary Button The primary button is used to Click, Double- Click and Drag. Secondary Button The secondary button is only used to Right-Click. Secondary Button The secondary button is only used to Right-Click. Tertiary Button The third button is only used to Scroll or Size Tertiary Button The third button is only used to Scroll or Size Basic Mouse Controls
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Mousy Movements
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Basic Mouse Commands
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The Keyboard Alphanumeric Keys Function KeysPunctuation KeysControl Keys
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Central Processor Unit Moves stuff around Adds stuff together
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Storage Main memory Auxiliary Floppy Hard CD DVD Flash Bits Bytes Kilo Mega Giga Tera
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Printers Impact Whole Character – Spinwriter Dot Matrix Inkjet Laser Black & White Color
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Files Data files Software files
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Networks
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