10.1 - Knowledge, Information and Data - Revision

• Data: recorded facts
• Information: Data with meaning
• Knowledge: set of rules which allow people to use information to make decisions

All ICT systems work on the basis of:

• Input
• Process
• Output

Sometimes there is another step which is called 'Feedback'. This steps enables the process to be modified/improved.

Data Capture

• Direct
• Indirect
• GIGO - Garbage In = Garbage Out

Data encoding:

• Makes data harder to understand (good/bad)
• Reduces the size of data (good for storage/input reasons)

Value judgements:

• A judgement based on your experience or information given
• Prejudice = a pre-judgement due to something (race, colour, creed = racism)