1.1.3 Input, Output and Storage Flashcards

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1
Q

Give some examples of an input device

A

Allows data to be entered into the computer

  • Keyboard
  • Scanner
  • Camera
  • Microphone
  • Sensor
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2
Q

Give some examples of an output device

A

Reports the results of processing to the user

  • Printer
  • Monitor
  • Speaker
  • Headphones
  • Actuator
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3
Q

Give some examples of an specialist input and output devices

A

Foot mouse

Eye Tracker

Puff/suck switch

Screen Reader

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4
Q

What are the 3 categories of storage devices?

A

Optical

Flash

Magnetic

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5
Q

What are some examples and key facts about Optical Storage?

A

DVD / Blu-Ray / CD

Read & written to using a laser on to a reflective surface

Uses ‘pits’ and ‘lands’

(+) Robust enough for long periods of use

(+) Low cost per MB

(+) Small / Light / Portable

(-) Slowest read/write speeds than others

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6
Q

What are some examples and key facts about Flash Storage?

A

Solid State Drive (SSD) | USB Memory Stick | SD Card

(+) No moving parts so is more robust and quieter than alternatives
(+) Lower power consumption due to the no moving parts.
(+) Faster read/write times than others
(+) Unaffected by magnetic fields
(+) Smaller physical size (portable)
(-) High cost per GB

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7
Q

What are some examples and key facts about Magnetic Storage?

A

Hard Disk Drive (HDD)

(-) Moving parts so susceptible to damage when moved.
(-) Physical size limitations due to moving parts
(-) Lower read/write speeds than Flash
(+) Cheaper per GB that Flash
(+) Currently the largest storage medium

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8
Q

What is stored in RAM?

A

Stores software and data currently in use

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9
Q

What are the key facts about RAM

A

Random Access Memory (RAM)

Primary Memory

Faster read/write speed than secondary storage media.

Volatile - loses contents when power is off

Stores software and data currently in use

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10
Q

What is stored in ROM?

A

Stores the Boot Program (Boot Loader) which starts the operating system

Stores the firmware in an embedded system

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11
Q

What are the key facts about ROM?

A

Read Only Memory (ROM)

  • Primary Memory
  • Non-volatile - data is stored when power is lost
  • Quick to start up
  • Stores the Boot Program (Boot Loader)
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12
Q

What is virtual storage?

A

Not physically on your computer, you only access the files from a remote location via a network/internet

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13
Q

What are the advantages of virtual storage?

A
  • Backups automatically saved on the cloud for recovery if needed
  • Data can be accessed anywhere with an internet connection
  • Data can be easily shared and worked on collaboratively
  • Stored away from the computer in case of disaster, data is not damaged.
  • Storage can be expanded as necessary
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14
Q

What are the disadvantages of virtual storage?

A
  • Dependent on internet connection that is fast enough
  • Privacy Issues - Data is held by a third-party, so you are putting trust in them to store your data.
  • One cloud storage company could be hacked meaning thousands of companies hacked
  • Reliant on servers of the company providing the connection (possible down time).
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