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COMP SCI > 1.1.3 > Flashcards

1.1.3 Flashcards

1
Q

What is an input device?

A

A device that converts an analogue signal into a digital one that can be used to store data on a computer

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2
Q

What is an output device?

A

A device which converts a digital signal into an analogue one which can be understood by the user

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3
Q

What is optical storage?

A

Devices are read from and written to using lasers

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4
Q

What are some examples of optical storage?

A
  • CD
  • DVD
  • BLU-RAY
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5
Q

What are the advantages of magnetic storage?

A
  • cheap
  • portable
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6
Q

What are the disadvantages of optical storage?

A
  • low capacity
  • slow transfer speeds
  • easily damaged
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7
Q

What is magnetic storage?

A

Where data is stored used 2 magnetic states

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8
Q

What are the advantages of magnetic storage?

A
  • high capacity
  • cheap per GB
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9
Q

What are the disadvantages of magnetic storage?

A

Slow access times

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10
Q

What are some examples of magnetic storage?

A
  • Hard drives
  • magnetic tape
  • floppy disk
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11
Q

What are the advantages of flash storage?

A
  • fast
  • compact
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12
Q

What are the advantages of ssd?

A
  • light
  • portable
  • shock- resistant
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13
Q

What are the disadvantages of ssd?

A
  • limited life span
  • expensive
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14
Q

What is RAM?

A
  • volatile
  • stores current data in use
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15
Q

What is ROM?

A
  • non-volatile
  • stores bootstrap
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16
Q

What is virtual storage?

A
  • where data is stored remotely and can be accessed by any computer in the system

COMP SCI (12 decks)

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