G9 IGCSE CS Output Devices

What are the types of printers

• Inkjet

• Laser

• Dot-matrix

• airdrop

• submerge print

What technologies are used to produce ink droplets in inkjet printers?

• Thermal bubble

• Piezoelectricity

• Airbrush

• Electric flash

• Cold press bubble

How are different colours produced in inkjet printers?

• Ink of four colours is sprayed in exact amounts to produce the desired colour.

• Ink of three colours is sprayed in exact amounts to produce the desired colour.

• Ink of six colours is sprayed in exact amounts to produce the desired colour.

• Ink of fourteen colours is sprayed in exact amounts to produce the desired colour.

How are coloured images projected in a DLP?

• White light is split into different primary colours using colour filters. Each micromirror is linked to a colour filter to determine the pixels of the coloured image.

• Blue light is split into different primary colours using colour filters. Each micromirror is linked to a colour filter to determine the pixels of the coloured image.

• White light is split into different primary colours using colour filters. Each big mirror is linked to a colour filter to determine the pixels of the coloured image.

• White light is split into different primary colours using colour filters. Each micromirror is linked to a colour ink to determine the pixels of the coloured image.

What is the advantage of LED over LCD technology?

• LEDs do not require backlighting whereas LCDs requires backlighting. Hence, LEDs consume less power, have a long lifetime and are light-weight.

• LEDs do require backlighting whereas LCDs requires backlighting. Hence, LEDs consume less power, have a long lifetime and are light-weight.

• LEDs do not require backlighting whereas LCDs requires backlighting. Hence, LEDs consume more power, have a long lifetime and are light-weight.

• LCDs do not require backlighting whereas LEDs requires backlighting. Hence, LCDs consume less power, have a long lifetime and are light-weight.

What technology does a 3D printer use to design objects?

• Computer-aided Design

• Paper printouts

• Digital Prints

• None of the choices

List some materials through which a laser cutter can cut.

• Glass

• Crystal

• Polymer

• Wood

• Water

What happens when a printer buffer is empty?

• The printer sends an interrupt to the processor and request for more data.

• The printer receives an interrupt to the processor and request for more data.

• Nothing

• Error

How many diodes are grouped together for a pixel in an LCD monitor?

• Three or four diodes. Three basic diodes are red, green and blue. An extra yellow diode is also used in some systems.

• Three or four diodes. Three basic diodes are white, green and blue. An extra orange diode is also used in some systems.

• Five or six diodes. Four basic diodes are red, green and blue. An extra yellow diode is also used in some systems.

• None

How is sound stored in a computer processed to be played via a loudspeaker?

• The digital data stored in the computer is first passed to a DAC and then through an amplifier. This analogue data vibrates a cone in a speaker.

• The digital data stored in the computer is first passed to ADC and then through an amplifier. This digital data vibrates a cone in a speaker.

• The analogue data stored in the computer is first passed to a ADC and then through an amplifier. This digital data vibrates a cone in a speaker.

• It can be stores in a glass jar

• Impossible