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ict > Personal Digital Devices > Flashcards

Personal Digital Devices Flashcards

1
Q

Factors to consider when buying a digital device:

A
  • battery life
  • connectivity
  • compatibility
  • purpose
  • storage
  • cost
  • size
  • security
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2
Q

Processor

A

It controls all the functions of the device

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3
Q

Internal memory

A

While the microprocessor is working, it needs to store the program instructions and data in its internal memory. Different devices have different amounts of memory- measured in bytes.

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4
Q

Flash memory

A

Type of peripheral ideal for portable digital devices

  • doesn’t lose memory when turned off
  • no moving parts so cannot be damaged (solid state)
  • it is removable and so can be transferred between devices.
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5
Q

Types of flash memory

A
  • USB stick (256Gb)
  • SD card (4Gb)
  • SDXC card (2Tb)
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6
Q

The bytes

A 
1 byte 
1 kilobyte = 1000 bytes 
1 megabyte = 1000 Kb
1 gigabyte = 1000 Mb 
1 terabyte = 1000 Gb
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7
Q

The 3 peripherals

A

Input devices
Output devices
Storage devices

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8
Q

Input devices

A
  • mouse
  • keyboard
  • webcam
  • game controller
  • scanner
  • joystick
  • microphone
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9
Q

Output devices

A
  • docking stations
  • headphones
  • printer
  • headset
  • screen
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10
Q

Connectivity

A

When digital devices are able to connect and share data

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11
Q

Data cable connection

A

USB Cable e.g most mobile phones can connect by USB cable to a computer

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12
Q

Bluetooth

A

A technology allowing devices to communicate with each other wirelessly.

Communicate over short distances using radio waves.

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13
Q

What is WI-FI?

A

WI-FI is a method of wireless communication using radio waves.

Can communicate over longer distances.

Allows devices to connect with a computer network and the Internet.

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14
Q

What is synchronising?

A

When 2 devices are connected and they can automatically exchange data.

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15
Q

Cloud synchronisation

A

If you download something on one of your devices, it will automatically download to all your devices. This saves you having to sync all yr devices with the computer.

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16
Q

Convergence (of mobile phones)

A

When a phone (smartphone) can perform the functions of other devices

17
Q

Examples of what is on a multifunctional phone:

A
  • Camera
  • entertainment e.g. can play music and games.
  • GPS receiver
  • Internet
18
Q

Network band

A

Mobile phones in different areas of the world use different network bands. If users want to use their device abroad they will have to have a dual band, tri band or to cover the whole world, a quad band phone

19
Q

How to keep your phone secure

A
  • set a pin / passcode
  • lock the SIM card
  • restrict Bluetooth usage
  • use Touch ID
20
Q

Responsible use of mobiles

A
  • recycle old phones
  • don’t take photos without someone’s permission.
  • don’t overuse
  • don’t send bullying messages
  • don’t use mobile whilst driving
21
Q

Why would you want a desktop computer?

A
  • powerful processor
  • good connectivity
  • can have Bluetooth and wifi cards fitted
  • easy to upgrade and enhance
  • has hard disk drives
22
Q

Why wouldn’t you want a desktop computer?

A

Need input and output peripherals

Not portable

23
Q

Adv. of laptop computers

A 
Webcam built in 
Has hard disk drives and optical drives 
Bluetooth and wifi built in 
Good connectivity 
Reasonably portable
24
Q

Disadvantages of laptops

A

Battery powered

Less easy to dismantle and upgrade

25
Q

Netbook computers - advantages

A

Strong and robust
Small and lightweight
WI-FI built in
Designed for using the Internet and ‘cloud’ computing

26
Q

Netbook computer - disadvantages

A

Tend to not have hard disk or optical drives

27
Q

Advantages of tablets

A 
Very light and portable 
Touch screen 
Virtual on screen keyboard 
Bluetooth, WI-FI and 3G 
Cameras 
Designed for playing media, Internet and reading e-books
Can download apps
28
Q

Eye strain : causes and solutions

A
  • looking at the screen for too long
  • sunlight on the monitor
  • regular breaks
  • use an anti-glare screen
  • adjust the screen
29
Q

RSI: causes and solutions

A
  • repeated actions

Wrist supports
Regular breaks

30
Q

Neck and back problems: causes and solutions

A
  • sitting in the wrong position
  • same position for too long
  • change height of screen/chair
  • move the computer close / further away
31
Q

Pain in knee / legs: causes and solutions

A
  • sitting in the wrong position for too long
  • sitting in the wrong positions
  • adjust the chair so that feet are flat on ground
  • take regular breaks to stretch legs
32
Q

Uses of digital devices

A
  • communicating
  • taking photos
  • listening to music
  • reading
  • playing games
  • streaming films

ict (2 decks)

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