O-LevelComputer ScienceHardware2210/12 · May/June 2017 · Q34 Marks
The diagram shows five output devices and five descriptions. Draw a line between each output device and its description. Output Device Inkjet printer LCD screen 2D cutter LED screen Laser printer Description Flat panel display that uses the light modulating properties of liquid crystals. Flat panel display that uses an array of light-emitting diodes as pixels. Droplets of ink are propelled onto paper. Electrically charged powdered ink is transferred onto paper. High powered laser that uses the x-y plane.
- (a)The diagram shows five output devices and five descriptions. Draw a line between each output device and its description. Output Device Inkjet printer LCD screen 2D cutter LED screen Laser printer Description Flat panel display that uses the light modulating properties of liquid crystals. Flat panel display that uses an array of light-emitting diodes as pixels. Droplets of ink are propelled onto paper. Electrically charged powdered ink is transferred onto paper. High powered laser that uses the x-y plane.[4]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.
- 1 mark for each correct line to a max of 4 marks.
- Inkjet printer -> Droplets of ink are propelled onto paper.
- LCD screen -> Flat panel display that uses the light modulating properties of liquid crystals.
- 2D cutter -> High powered laser that uses the x-y plane.
- LED screen -> Flat panel display that uses an array of light-emitting diodes as pixels.
- Laser printer -> Electrically charged powdered ink is transferred onto paper.
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