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Chapters 1 & 2
(a) Data consists of raw facts and figures
(b) Data + meaning = information
(c) Knowledge is gained from information by collecting data
· 2
When a new pupil joins a school a form is filled in with all the details. The school
secretary then enters the data into the computer system.…read more

Page 3

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What are the four methods of data validation mentioned and what does each check?
Method Used for...…read more

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Digital photography
· Digital cameras have different maximum image resolutions
· Lower resolutions take up less memory space but the quality is not as good
· Higher resolution cameras cost more take up more memory but the quality is better
Input & Output examples
Input Devices Output Devices
Digital camera Camera Screen
microphone Speakers
Keyboard Printers

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Music & Sound
· Ripping is the process of copying the contents of CDS or DVD'S on to the hard
· Musical instruments require MIDI to connect to a computer
Can be composed without the need for writing
down notes, done for you
Advantages of ICT Almost any kind of music can be found on the
for Music and
illegal copies are made
Disadvantages of Does not sound the same as live music
ICT for music and
Mobile Phones
· WAP....…read more

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Tom uses a WAP mobile phone to access the internet'
(a) Give two problems that may arise when using a mobile phone
Signal maybe lost making the phone useless, if used without hands free kit in car
they can become dangerous
(b) Give one advantage of using a mobile phone rather than a landline
Being able to use the mobile anywhere, without the restriction to a wire like standard
landline phones.…read more

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· Fibre optic cables do not become weaker over distance unlike
normal telephone connections
· They are generally faster than ASDL
Geographical information systems (GIS)
· A GIS uses a combination of hardware, software and data to
manage analyse and display geographical data
· Every website has a URL what? An address where the website is to be found e.g.
facebook.co.…read more

Page 8

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Chapter one Summary...
· Data consists of raw facts and figures
· computers process data to Produce information
· People use information to Produce knowledge
· Garbage in garbage out... If you give a computer incorrect data it will provide you with
incorrect information, leading to incorrect knowledge (cascading)
Chapter two Summary...…read more

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Chapter 3 Summary...
· The internet is a global network of computers
· To use the internet you must subscribe to an internet service provider
· An internet browser is software which helps you explore the internet (E.g.…read more

Page 10

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Distance learning: means of studying for a qualification at home.…read more




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