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Computer Science > Chapter 5 - Output Devices (1.1) > Flashcards

Chapter 5 - Output Devices (1.1) Flashcards

1
Q

What is an output device?

A

Sends information from a computer

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2
Q

State some examples of output devices. (5)

A
  1. Screens
  2. Printers
  3. Multimedia Projectors
  4. Speakers
  5. Actuators
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3
Q

What are some advantages of LCD monitors? (6)

A
  1. reach maximum brightness almost immediately
  2. sharp images with realistic and vivid colours
  3. better picture definition as they produce a brighter light
  4. thinner screens in construction as LEDs are small
  5. reliable as they last indefinitely
  6. consume very little power, produce very little heat and reduce running costs
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4
Q

What are some advantages of OLED screens? (5)

A
  1. flexible as made of plastic instead of glass
  2. way thinner than LCD
  3. way brighter than LCD and don’t need backlighting, so they consume less power which translates into longer battery life
  4. OLEDs respond 200 times faster than LCDs
  5. Produce truer colours through a bigger viewing angle, LCD has colours darken and disappear if you look from the side
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5
Q

What are some disadvantages of OLED screens? (2)

A
  1. They don’t last as long
  2. Not waterproof
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6
Q

What are some advantages of laser printers? (2)

A
  1. high quality and high speed painting
  2. increasingly affordable
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7
Q

What is a disadvantage of laser printers? (1)

A

photorealistic prints are impossible

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8
Q

What are some advantages of inkjet printers? (2)

A
  1. produce excellent, photo-realistic images
  2. cheaper than laser printers
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9
Q

What are some disadvantages of inkjet printers? (2)

A
  1. Slow to use
  2. Ink cartridges have to be replaced frequently
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10
Q

What are some advantages of dot matrix (impact) printers? (2)

A
  1. Useful when multi-part stationary is needed
  2. Can operate in damp and dirty environments
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11
Q

What are some disadvantages of dot matrix (impact) printers? (3)

A
  1. Noisy
  2. Slow
  3. Print quality is poor
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12
Q

What are some advantages of 3D printers? (2)

A
  1. Can create a range of products and can be used for general use
  2. eco-friendly as it doesn’t have as much waste
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13
Q

What are some disadvantages of 3D printers? (2)

A
  1. Expensive
  2. Mistakes can be made which wastes money
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14
Q

What are some advantages of multimedia projectors? (4)

A
  1. Aids concentration as there’s an image to look at
  2. Adds interest to the lesson as you can watch videos
  3. Efficient and consistent in quality
  4. Adds impact to lessons
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15
Q

What is a speaker?

A

Outputs sound from a device

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16
Q

What is an actuator?

A

motors commonly used in conjunction with sensors to control a mechanism

17
Q

What are some examples of what actuators can do? (4)

A
  1. open a window or valve
  2. starting or stopping a pump
  3. turning a wheel
  4. controlling devices in a smart home

Computer Science (20 decks)

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