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Information and Communication Technology (I.C.T.) > Types of Computers > Flashcards

Types of Computers Flashcards

1
Q

Name all the types of computers

A
  1. PC/desktop computers
  2. Laptop computers
  3. Tablets
  4. Smartphones
  5. Smartwatches
  6. Mainframe computers
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2
Q

What is a PC/desktop computer?

A

PC/desktop usually refers to a general-purpose computer that is made up of a separate monitor, keyboard, mouse and processor unit.

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3
Q

What are the advantages of a PC computer over a laptop computer?

A
  1. A PC’s spare parts and connections tend to be standardized, resulting in lower costs than a laptop’s.
  2. The desktop tends to have a better specification for a given price
  3. Desktop’s power consumption is not critical since they usually plug straight into a wall socket
  4. Because they are usually fixed in one location, there is less likelihood of them being damaged
  5. Internet access is also more stable since they are not moved around, ensuring the user will always have the same data transfer rate.
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4
Q

What are the disadvantages of a PC computer over a laptop computer?

A
  1. They are not particularly portable since they are made
    up of separate components
  2. Because they are not particularly portable, it is necessary to copy files, when you want to do some work elsewhere with a laptop you simply take the whole computer with you.
  3. They tend to be more complicated since all the components need to be carried around with you.
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5
Q

What is a Laptop computer?

A

It refers to a type of computer where the monitor, keyboard, pointing device and processor are all together in one single unit. This makes them extremely portable.

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6
Q

What are the key features you would expect to find in a laptop?

A
  1. They are lightweight
  2. They have a low power consumption and long battery life.
  3. The processor doesn’t generate too much heat
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7
Q

What are the advantages of Laptop computers when compared to Desktop computers?

A
  1. Their portability
  2. Because everything is in one single unit, there are no trailing wires
  3. They can take full advantage of Wi-Fi
  4. Since they are portable, they can link to any multimedia system
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8
Q

What are the disadvantages of Laptop computers when compared to Desktop computers?

A
  1. They are easily stolen since they are portable
  2. They have limited battery life
  3. The keyboard and pointing device can be awkward to use
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9
Q

What is a tablet?

A

They are a relatively new Internet-enabled portable computer. They work similarly to Smartphones. They use touch screen technology and don’t have a keyboard
which is a part of the touch screen and keys are touched by fingers or a stylus. Internet
is usually through Wi-Fi or 3G/4G/5G connectivity

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10
Q

Features of a tablet

A
  1. High-definition, anti-glare
    displays
  2. Front and back-facing
    cameras
  3. Lower weight and longer
    battery life than laptops
  4. Bluetooth connection to
    printers and other devices
  5. Flash (solid state) memory
    and cloud storage facilities to
    backup and synchronize
    (sync) data source
  6. Sensors to carry out the
    different functions such as the
    a. Proximity sensor
    b. Accelerometer
    c. Speech recognition system
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11
Q

What are some examples of tablet sensors?

A

a. Proximity sensor
b. Accelerometer
c. Speech recognition system

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12
Q

What are the advantages of tablets when compared to laptops?

A
  1. Very fast to switch on
  2. Fully portable
  3. Touchscreen technology
  4. Can use several Apps as standard like the built-in camera
  5. Don’t generate any heat
  6. The battery life of a tablet is longer than a Laptop
  7. When the power button is pressed it goes into standby but is still connected to the
    Internet so that you can still hear alerts from emails…etc
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13
Q

What are the disadvantages of tablets when compared to laptops?

A
  1. They have limited memory
  2. They can be expensive if the Internet is accessed through 3G/4G/5G mobile
    networks
  3. Typing on a touch screen can be slower than a keyboard on a laptop.
  4. Laptops tend to support more types of file formats compared to tablets
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14
Q

What is a Phablet?

A

It is a tablet designed as a hybrid
between a tablet and a smartphone
and has a smaller screen than a tablet
(between 12 cm and 15 cm display
size).

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15
Q

What does GPS stand for?

A

Global Positioning System

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16
Q

What does VOIP stand for?

A

Voice Over Internet Protocol

17
Q

What are some examples of operating systems?

A

Android, ios, Windows

18
Q

What are smartphones?

A

A small computer device that allows normal phone calls to be made but also has an operating system
(such as ios, Android, Windows….etc), allowing them to run several computer applications that allow many functions.

19
Q

What are the functions that smartphone applications allow?

A
  1. Sending and receiving e-mails.
  2. Surf the net
  3. Global Positioning System -GPS
  4. Calendar functions
  5. Telephone banking
  6. Voice Over Internet Protocol
    (VOIP)
  7. Streaming of videos and music
  8. Access to social media
  9. Instant messaging
20
Q

What does OLED stand for?

A

Organic Light Emitting Diode

21
Q

What is OLED? Where will it be used?

A

Touch screens will be coated with a crystalline layer that allows the phone to be partially solar-powered, but this will allow them to use Li-Fi. The next generation of smartphones will use touch screens with OLED.

22
Q

What does Li-Fi stand for?

A

Light Fidelity

23
Q

What is Li-Fi?

A

A communication that uses visible light rather than a radio wave.

24
Q

What is the advantage of using Li-Fi?

A
  1. Faster than Wi-Fi. (it has a much higher data transfer rate)
  2. More secure (it stops unauthorized use of Internet “Piggybacking”)
  3. It can be used on flights as it doesn’t use radio waves
25
Q

How does the OLED technology work?

A

The technology works by switching LED bulbs on and off in nanoseconds (10-9)
which is too quick for the human eye to detect.

26
Q

What does light on and light off represent in OLED?

A

What does ‘light on’ represent?
It represents the binary value 1
What does ‘light off’ represent?
It represents the binary value 0.

27
Q

What are the advantages of smartphones when compared to laptops?

A
  1. They are very small in size but laptops are much heavier.
  2. Can use them to make phone calls as well as connect to the Internet (this is not the case with laptops).
  3. They can be used almost everywhere as they use Wi-Fi and mobile phone networks.
  4. They have hundreds of apps
  5. They have a reasonable battery life compared to laptops
28
Q

What are the disadvantages of smartphones when compared to laptops?

A
  1. The small screens make pages
    difficult to read and small keyboards make typing very difficult while laptops have much bigger screens and keyboards.
  2. Web browsing and photography can drain the battery quickly.
  3. Memory size isn’t very large if
    compared to laptops and PCs.
  4. Not all website features are
    compatible with smartphone
    operating systems when compared to laptops.
  5. It’s easy to lose a smartphone
    because of its small size.
29
Q

What are smartwatches?

A

Smartwatches essentially allow users to wear a mini-computer on their wrists. They offer the same functions as a smartphone and make use of OLED technology.

30
Q

What are the functions of smartwatches?

A
  • Internet connectivity (browsing, searches, sending emails and so on)
  • Ability to make and take phone calls
  • Messaging via text or video
  • Weather forecasts
  • GPS
31
Q

What are the advantages of smartwatches?

A
  1. They are even more convenient than smartphones since the technology delivers notifications straight to the user’s wrist.
  2. They are very easy to use for monitoring fitness and health regimes.
  3. They are small in size.
  4. Can use them to make phone calls as well as connect to the Internet
  5. They can be used almost everywhere as they use Wi-Fi and mobile phone networks.
32
Q

What are the disadvantages of smartwatches?

A
  1. Smartwatches are relatively large and bulky which can make them
    uncomfortable to wear.
  2. They tend to be rather unattractive in design.
  3. Memory size isn’t very large if
    compared to laptops and PCs.
  4. Web browsing and photography can drain the battery quickly.
  5. The small screens make pages
    difficult to read and small keyboards make typing very difficult while laptops have much bigger screens and keyboards
33
Q

What are Mainframe computers?

A

It is a term used for a large (room-sized), very powerful computer system.

34
Q

What is the main purpose of Mainframe computers?

A

Running commercial applications, such as banking and insurance, as huge amounts of data have to be processed every day.

35
Q

What are the features of Mainframe computers?

A
  1. They may have many CPUs
  2. They have very fast processor speed
  3. They can support many operating systems
  4. They have huge amounts of storage capacity
  5. They have huge internal memory (RAM)
36
Q

What does RAM stand for?

A

Random-access memory

37
Q

What does CPU stand for?

A

Central processing unit

Information and Communication Technology (I.C.T.) (3 decks)

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