ICT , Unit 1, edexcel,

My notes for the exam, doesn't cover everything in major deatil but good for a base or last minute cramming ***

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Unit 1
Choosing a phone:
Picture resolution (pixels)
Camera resolution (megapixels)
Storage capacity (gigabytes)
Memory card (gigabytes)
SD and SDHC cards: flash memory cards, SD (2GB), SDHC (32GB)
Wi-Fi: wireless fidelity. Long-range data transfer.
Bluetooth: Short-range data transfer.
User Interface: the way in which a user interacts with a system
Features for the elderly:
Easier navigation
"Panic" button
Larger sized buttons and keys
Pro's and Con's of mobile phones
Texting can give RSI
Unsure of the risks
Impact of "text" speak
Cyber bullying and crime
Types of computer:
Net books
Personal Digital Assistants (PDA)
Computer features:

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Processor (CPU): The faster the processing speed and power the computer uses.
Memory: RAM (random access memory), the higher the RAM the more programs you
can access and open at once.
Hard-drive size: The primary storage of the computer, the size of the hard drive is
measured in bytes.
Wireless Enabled: This enables you to connect to a network,
USB Connection: The most common method of connecting peripherals to a computer.
Sound card/Graphic card: Devices which enhance aspects of the computers
motherboard.…read more

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o People with technological skills get better paid jobs
o The internet gives people a wider access to products and services.
o Students who use computers at home or school can become independent
o People can take part in online courses to improve their skills.
o People can feel left out.
o Not having access to communications can isolate people.
o People can use the internet for media and entertainment.…read more

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Unit 2
Microchip: an electronic circuit used to control computers and most other electronic devices.
Biometrics: an automated method of recognising a person based on their physical
Cloud computing: A system in which all computer programs and data is stored on a central
server owned by a company and accessed virtually.
Metadata: provides information about the content of a digital item.
Cyber cafe: a cafe that has a number of personal computers connected to the internet and
available for use by customers.…read more

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Unit 3
Choosing a laptop:
Hard-disk drive
Future Proofing
High Definition (HD): HD has more lines of pixels on the screen, so it produces a clearer and
sharper picture.
Blu-ray: a disk that enables the recording, rewriting and playback of high-definition video and
the storage of large amounts of data.
Download: transfer of a file, form a central computer to your computer.
Upload: transfer a file from your computer to another format, e.g. a webpage.…read more

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Types of network:
Ethernet cable: A cabled connection which connects via an interface card, has three
different speeds; basic, fast and Gigabit.
Wireless: Allows computers to communicate with radio and microwaves.
Powerline: Uses the existing mains power circuits in the house for data transmission
A router connects all computers to a modem; nay method of connection requires a router.
Broad-band: a high-speed connection to the internet.
Bandwidth: The amount of data that can fit through an internet connection.…read more

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Computer-related health problems:
Back pain
Eye Strain
Repetitive strain injury (RSI)
Eye Care
Dongle: a small piece of hardware that connects to a computer and has uses including data
storage and picking up Bluetooth and 3G signals.
Wiki: a type of website that encourages collaboration by allowing users to edit, add and remove
Teleworking: Working from home but staying in touch with others with the help of
technology.…read more

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Unit 5
Online Accounts
Validation: the process of checking that the data entered is reasonable or one of the expected
Verification: The process of checking that the data entered is accurate.
Online Fraud
Credit card: a card which enables a person to buy goods and services without the need for
cash, the holder agrees to pay the money back at a later date.
Debit card: the money is taken directly from the holder's bank account.…read more


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