R001 FULL REVISION NOTES

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Cambridge Nationals in ICT
Unit 1 (R001) Revision Notes
Name: ______________________
Class: ______________________
Exam Questions at the back of this Booklet
(Other revision resources can be found on the school website)
Issue Dec 2013

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Contents
Features and Purposes of Computing Devices ................................................................................................................. 3
Input Devices................................................................................................................................................................. 3
Other Input Devices: Sensors ........................................................................................................................................ 4
Output Devices.............................................................................................................................................................. 4
Operating Systems ............................................................................................................................................................ 5
Utility Software ............................................................................................................................................................. 6
Storage and Connectivity Devices ..................................................................................................................................... 8
Office Configurations .................................................................................................................................................... 9
Connectivity .................................................................................................................................................................... 11
Connecting to Wi Fi ..................................................................................................................................................... 12
Monitoring Employees .................................................................................................................................................... 13
Teleworking..................................................................................................................................................................... 14
Video Conferencing ......................................................................................................................................................... 15
Data Capture Methods.................................................................................................................................................... 15
Online and Paper Based Forms ................................................................................................................................... 15
Automated Methods................................................................................................................................................... 16
Data Validation............................................................................................................................................................ 16
Verification Checks:.....................................................................................................................................................…read more

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Features and Purposes of Computing Devices
Lots of different people use lots of different devices to access IT. It depends on all sorts of things which one you use.
Item Features Purpose
Large screen Business people to use in multiple
Full keyboard locations.
Touchpad mouse Students to use between home/college.
Laptop Full computer Office/Multimedia/Gaming
Portable
Small screen Mobile users who need a basic computer
Very light on the move.
Portable Family ­ entertainment.
Netbook
Long battery life Commuters working on the move.…read more

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Other Input Devices: Sensors
There are other input devices. The ones mentioned on the previous page are all manual; that means the user has to
use them to get data in.
But what if it is not convenient? For example what if you needed to measure temperature in a volcano? A keyboard
would not be idea. What if you also wanted to take temperature measurements every 0.01 of a second? Humans are
just not fast (or accurate) enough.…read more

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Operating Systems
An operating system is what every computing device has to have. It allows us to interact (use) a computer. Without
it, your computer would just be plastic and metal. It controls everything the computer does.
An operating system (or OS) is a computer program which controls everything the computer does
(absolutely everything!!!).
It is essential software.…read more

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There are lots of different operating systems which you need to know about. Here they are...
Operating
Devices Features Purpose
System
Windows, Icons, Menus Pointers
Start Menu Can run a wide range of software:
Desktop PC Customisable background, icons. Business ­ E.g. to use Office
Laptop windows files, folders. Personal ­ Gaming, Entertainment
Netbook Shortcuts (e.g. CTRL+C etc) Social ­ Internet browsing etc.
Ultra Book Separate usernames and passwords.…read more

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Item Definition / Meaning Why needed / used
A firewall is a piece of software which To prevent nasty spyware or hackers trying to
controls what information comes in to get in to your computer.
Firewall your computer and also what leaves your To stop viruses which may infect your
computer based on a series of rules. computer from sending personal information
out of your computer.…read more

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Storage and Connectivity Devices
Media / Main Features Who would use it & what for (be specific)
Connectivity
Large capacity Used in mobile phones, tablets and digital
Cheap cameras for storing pictures, applications, videos
Small and portable etc.
Memory Cards
Connects to an internet Used to connect a physical place to the internet.
connection.
Modem Speeds can vary
Allows you to share an internet Anywhere where the internet needs to be shared
connection.…read more

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Office Configurations
People with various impairments may need help when accessing IT systems. Lots of technology exists which would
help them.
Braille Keyboards A way for blind people to be able to use touch to
recognise keys on the keyboard and type.
Microphone input Give voice commands to a computer (e.g. Siri)
Magnifier To enlarge parts of a screen to make it easier to see for
visually impaired people.
On Screen Keyboard For people who cannot use a keyboard, an on-screen
keyboard could be used.…read more

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Factors Affecting Choice of System
When you are choosing what kind of computer to buy in a business you need to think about a few different things.
Otherwise, the computer you may spend a lot of money on, may not actually be fit for purpose or be unusable by
the person who will be using it.…read more

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