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Ict > Unit 3.1 > Flashcards

Unit 3.1 Flashcards

1
Q

External storage devices are grouped into

A
  • Magnetic disks
  • Optical Devices
  • Magnetic tapes
  • USB flash drives
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2
Q

2 features of a hard disk

A
  • The main storage device of a computer

- Access speeds are faster than a CD drive

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3
Q

What are internal hard disks used for

A

-used to permeantly store the operating system, all application software and user data

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4
Q

What are external hard drives used for

A
  • high-storage capacity
  • portable devices
  • suitable for small-scale backup if data
  • can be attached using a USB cable
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5
Q

What does ROM stand for

A

Read Only Memory

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6
Q

2 features of an optical disk:CD-ROMs

A
  • The disk are supplied with information such as music and software already stored on them
  • The user can read data from it but not write on it
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7
Q

What does CD stand for

A

Compact Disks

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8
Q

3 features of an optical disk:CD-Recordable

A
  • The disks are supplied blank
  • The user can only record data onto the disk once
  • Data can be read from the disk as often as required
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9
Q

3 features of an optical disk:CD-RW(rewritable)

A
  • The disks are supplied blank
  • The user can record data into the disk, erase it and rewrite it many times
  • CD-RWs are more expensive the CD-Rs
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10
Q

What does DVD stand for

A

Digital Versatile Disk
or
Digital Video Disk

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11
Q

2 features of a DVD

A
  • DVD drives can also read CDs

- DVDs are used to store large amounts of data and films

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12
Q

3 features of a blu-ray DVD

A
  • Have a much larger storage capacity than DVDs
  • Can be used for recording high-definition television without loss of quality
  • Can store digitally encoded video and audio data
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13
Q

What does DAT stand for

A

Digital Audio Tape

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14
Q

4 features of a Magnetic tape streamer

A
  • A tape streamer reads and writes data stored on magnetic tape-DAT
  • Data is stored in blocks and there is a gap between each block
  • Transfer of data is slow because magnetic tape uses serial access
  • Magnetic tape is an inexpensive way to store large amounts of data
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15
Q

Another name for a USB flash drive

A

Pen drive

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16
Q

3 features of a USB flash drive

A
  • They are portable devices that use low power consumption
  • They work on the principle of ‘plug and play’
  • Cost is linked to the capacity of the USB flash drive
17
Q

What does RAM stand for

A

Random Access Memory

18
Q

Features of ROM memory

A
  • It can be read from but not written on
  • Programmes stored on ROM are permeant, therefore ROM is non-volatile
  • It is used to store ‘booting up’ programme for the windows operating system.
19
Q

Features of RAM

A
  • It can be read from and written to
  • It is volatile
  • It is used to hold the current application programs and data that the user is working with
  • The size of the RAM can influence the speed of the processor
20
Q

Define Volatile

A

The contents of the Memory are lost when the macheine is switched off

21
Q

Features of Cache Memory

A
  • It can be read from or written to
  • It is small in capacity but has faster access speeds
  • It’s purpose is to store frequently accessed programmes
22
Q

Define interface

A

Allowing communication between the user and the computer

23
Q

Define Memory management

A

Allocating internal memory (RAM) to programmes and data that the user is currently using

24
Q

Define resource management

A

Controlling peripheral devices and handling user request for peripheral devices

25
Q

Define execution

A

‘Booting up’ the computer when it is switched on

26
Q

Define error handling

A

Dealing with errors that occur when programmes are running and communicating the responses to software developers and users

27
Q

Define security system

A

Checking and controlling user access to programmes

28
Q

What does GUI stand for

A

Graphic User Interface

29
Q

GUI: windows

A
  • Each folder, programme, document opened by a user is displayed in a separate window
  • Windows can be minimized or maximized
  • The window that is maximized is described as the ‘active’ window
30
Q

GUI:Icons

A
  • Small graphics representing a programme, file or a tool from a toolbar
  • Icons reside on the desktop as shortcuts to programs or documents
  • When you double-click an icon, the folder,program or document opens
31
Q

GUI:Menu

A
  • Menus can be ‘pull down’ or ‘pop up’
  • Each menu provides a list of options for the user to select from
  • Menus can be customized to show a full list of options (full menu) or a smaller list of options (short menu)
32
Q

GUI:Pointers

A
  • A pointer shows the position of a cursor on the screen
  • A typical user controls the pointer using a mouse
  • The user can move the pointer over an icon and then use the buttons on the mouse to select and open the folder, program or document

Ict (9 decks)

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