411 REFERENCE · Wikibooks
GCSE Computer Science/AQA GCSE Computer Science/Constants, variables and data types
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
data - facts, numbers and statistics that are not in context so therefore have no meaning. eg, 75p
information - data in context. eg, the drink costs 75p
knowledge - the transfer of information between humans. eg, Joe Bloggs told Josh the drink was 75p
constants - something that never changes e.g Pi
variable - something thats changes over time eg. x +1 = Y
Data can exist in a number of different formats - typically referred to as DATA TYPES.
The range of data types within this course are:
INTEGER
REAL
BOOLEAN
CHARACTER
STRING