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Chapter 2 - The Computer

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show Computer/Computer System  
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show screen, or monitor, keyboard, & mouse/trackpad  
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show Keyboards  
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Allows rapid entry of text by experienced users, & Usually connected by cable, but can be wireless   show
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non-alphanumeric keys are placed differently, & accented symbols needed for different scripts, & minor differences between UK and USA keyboards   show
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arrangement not optimal for typing, & layout to prevent typewriters jamming!   show
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show Alphabetic  
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common letters under dominant fingers, & biased towards right hand, & common combinations of letters alternate between hands   show
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designs to reduce fatigue for RSI, & for one handed use   show
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show Chord keyboards  
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show phone pad and T9 entry  
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show T9 predictive entry  
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show Handwriting recognition  
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show Speech recognition  
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show Numeric keypads  
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show Mouse  
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show planar movement, & buttons  
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show Mechanical  
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show Optical  
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show Touchpad  
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show Touchpad  
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ball is rotated inside static housing. & like an upsdie down mouse!   show
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show Thumbwheels …– for accurate CAD  
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show Thumbwheels …– for fast scrolling  
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show Joystick  
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show Joystick  
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for laptop computers, & miniature joystick in the middle of the keyboard   show
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show Touch-sensitive screen  
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direct pointing device   show
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small pen-like pointer to draw directly on screen   show
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may use touch sensitive surface or magnetic detection   show
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show Stylus  
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show Light Pen  
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Mouse like-device with cross hairs, & used on special surface and rather like stylus   show
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very accurate & used for digitizing maps   show
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control interface by eye gaze direction. & uses laser beam reflected off retina   show
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show Cursor keys  
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show bitmap displays  
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show Jaggies  
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softens edges by using shades of line colour & also used for text   show
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show Cathode ray tube  
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show Cathode ray tube  
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show Liquid crystal displays  
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draw the lines to be displayed directly, & no jaggies, & lines need to be constantly redrawn , & rarely used except in special instruments   show
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Similar to random scan but persistent => no flicker. & Can be incrementally updated but not selectively erased. & Used in analogue storage oscilloscopes   show
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used for meetings, lectures, etc.   show
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usually wide screen   show
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lots of small screens together   show
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show projected  
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show back-projected  
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show situated displays  
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thin flexible sheets, & updated electronically   show
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show cockpit and virtual controls  
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six-degrees of movement: x, y, z + roll, pitch, yaw   show
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fibre optics used to detect finger position   show
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show VR helmets  
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show whole body tracking  
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ordinary screen, mouse or keyboard control, & perspective and motion give 3D effect   show
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use stereoscopic vision, & VR helmets, & screen plus shuttered specs, etc.   show
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mve head … lag … display moves   show
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show depth perception  
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