Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Revision cards for AQA AS INFO2 Systems, Data and Information

What is Data? Raw, unprocessed facts and figures input into a system
Examples of Data 1. Barcodes scanned into an EPOS system 2. A list of student test scores
What is Information? Data that has been processed to give it meaning
Examples of Information 1. Receipt showing names of products purchased and prices 2. Scores converted to overall grades
Characteristics of good quality Information Accurate, up-to-date, relevant, complete, from a reliable source
What is ICT? The use of technology for the input, processing, storage and transfer of data and the output of information
What are the three parts of any system? Input, process and output
What are the six components of an ICT system? Software, hardware, data, information, people and procedures
Five different forms of data Text, sound, still images, moving images, numbers
What is coding? Shortening data when input (i.e. 3 letter airport code) or allocating a number to a value judgement (rating quality of service on scale of 1 to 5)
What are the advantages of coding data? Saves disk space, reduces data input errors, quicker to input than the full words so saves user time, coding value judgements allows us to compile statistics more easily (but loses accuracy)
What is encoding? The computer converting data input into machine-readable binary form (1 and 0)
What is direct data? Collecting and using data for a specified purpose, e.g. student details to enrol them on a course
What is indirect data? Using data for a different purpose from that it was collected for, e.g. using student details to send them marketing materials about other courses
What is an ICT system? Where the output from the system goes directly to a human being or into another ICT system.