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Mapa Mental
por
eleanorbradbury
, criado
more than 1 year ago
A2 ICT (1. Data, Information, Knowledge and Processing) Mapa Mental sobre Data, Information, Knowledge and Processing, criado por eleanorbradbury em 09-04-2013.
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1. data
information
knowledge and processing
ict
ict
1. data, information, knowledge and processing
a2
Criado por
eleanorbradbury
quase 12 anos atrás
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42031
mind_map
2016-06-07T00:30:44Z
Data, Information, Knowledge and Processing
Data, Information and Knowledge
Data is made of
alphanumeric
Characters
Information= Data +
Structure + Context +
Meaning
Knowledge is the application and
use of information
Representation Methods
Text
Advantages
Disadvantages
Clear to understand
Lots of Detail
need to be able
to read and
undestand the
language
level of detail can be
confusing
Lots of text cannot
be read quickly
Graphics
Advantages
Multilingual, do
not need to be
able to read a
language
Can match what you see
with physical shapes
Disadvantages
Confusing if you dont know the symbol
some symbols do not
mean the same thing
in different countries
Sound
Advantages
No fixed posistion
No line of sight
required
Good for visually
impaired people
Disadvantages
No good in large
areas
Usually language
based
May not know the
sound
Need to be able to hear
Moving pictures
Advantages
Lots of
information
conveyed
Not language dependant
Disadvantages
Problems if sound
attatched
Linear, if you do not
see the start you may
not understand it
LED
Advantages
Can be used in
many places
Similar to
graphics
Can keep
information
secure
Disadvantages
Need to be able to
see the lights
Combination of lights needs to be
known to be understood
Data types
Boolean- yes/no
Real- Numbers with
decimals
Integer- whole numbers
Text/String- alphnumeric characters
Sources of Data
Direct- when you
have collected the
data
Indirect- when
someone else has
collected the data for
the same or a
different purpose
Advantage
Source and
collection
method are
verified
Exact data can be collected
Data collected can be changed to needs
Disadvantages
May not get a large
amount of data
Data may not be available
Advantages
Large range of
data available
Data available
from different
time periods
Data may have
already been
analysed
Disadvantages
Do not know if
collection was biased
Cannot be certain of
accuracy
May not have all
information about how
it was collected
If the information was not
orginally collected you can't get
hold of it
Static and dynamic Data
Static - Cannot be changed
Dynamic - can
be updated
Quality of information
Accuracy
Relevance
Age
Completeness
Presentation
Level of detail
Encoding Data
Validation
Verification
Ensures that data entered is
reasonable, sensible, complete and
within acceptable bounds
Range check
Presence check
Lookup check
Picture check
Type check
Check digit
Ensures source and object document are
the same
Proof reading
Computer verification
Manual Verification
Back up and archiving
Backing up involves making
a copy of the data
Archiving is removing data
from direct acess
Cost of information
Generic ICT system
Hardware- specialist equipment such as
scanners, graphics tablets ect
Software- desktop publishing
or graphics packages ect
personnel - new
employees and
training staff
Consumable - electricity,
paper and ink ect
input external data is put into
the system
process - manipulating the data
storage - holding the data for later use
output - data beign passed
outside the system
feedback - output influencing the input
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42031
mind_map
2016-06-07T00:30:44Z
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