Computing input and output devices

1. 1Which of these is an Input device

   1. A2D/3D Scanners
   2. BKeyboard
   3. C2D/3D Printers
   4. DProjector
2. 2What is an input device?
   
   

   1. AAny piece of computer hardware equipment that is used to communicate the results of the data.
   2. BAny device that allows a computer to receive data from the outside world.
3. 3WHich two of these statements are true about 2D scanners

   1. AOne place where a 2D scanner is used is in airports, where they can read passport pages and then matches it with the photography of a persons face to be compared.
   2. BA 2D scanner can read a barcode
   3. CThey convert hard-copy documents into an electronic form which can be stored in a computer memory
   4. DA 2D scanner is an output device
4. 4T\rue or False, 3D scanners scan a solid object and produce an electronic 3D image.

   1. AVerdadero
   2. BFalso
5. 5Which statement are true about 3D scanners?

   1. AA 3D scanner is used in CT, an image is sliced into slices of about 1mm thick, these are then stored as a series of digital values
   2. BA 3D scanner s an output device
6. 6Which two of these are true about Barcode readers?

   1. ABarcodes consist s of a series of dark and light lines of varying thickness
   2. BBarcode readers are an output device
   3. CA Barcode reader can read QR codes
   4. DEach dark and light line can be represented by the binary value (dark line), or a 0(light line)
7. 7Which of these is an advantage of Barcode readers?

   1. AFaster checkout
   2. Bno need to price each item indavidually
   3. CAdjust shutter speed

Descripción

Quiz on Untitled, created by Joshua Sutton-Dodd on 02/02/2019.

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Joshua Sutton-Dodd

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