CS input devices 0.0 / 5 ? ComputingInput devicesIGCSEEdexcel Created by: EJF2002Created on: 17-01-18 09:07 what is an input device? a piece of hardware designed to allow data to be entered into the computer 1 of 10 what is a concept keyboard? a virtual keyboard on a touch screen device 2 of 10 what is a mouse used for? it is used to navigate the pointer to a location on screen 3 of 10 how do 2D and 3D scanners work? scanners of every variety work by shining lights and lasers on objects and reading data off of the reflections. 4 of 10 what are biometric scanners used for? to identify people by unique 5 of 10 how do barcode scanners work? a light is shone on the white and black lines and the reflection is detected and converted into 1(white) and 0(black) 6 of 10 what is a QR code? it is a 2 dimensional barcode that can hold up to 7000 values to a barcodes 30 7 of 10 how does a digital camera work? it detects light and encodes that light into 1's and 0's that build up a image or video 8 of 10 how do touch screens work? either by detecting small pressure changes on the screen (resistive) or by detecting the tiny electrical charges we produce (capacitive) 9 of 10 what are microphones? anologue sound recording devices 10 of 10
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