ICT WJEC Course Theory ALL Topics FULL Revision Notes

Got exam coming up in May - good luck. These should help; they include all of the topics but NO case studies.

HideShow resource information
Preview of ICT WJEC Course Theory ALL Topics FULL Revision Notes

First 289 words of the document:

ICT AS Revision Notes
ICT AS REVISION NOTES (WJEC COURSE)
Topic 1 ­ DATA, INFORMATION AND KNOWLEDGE
Key terms:
Data: Raw facts and figures that have no meaning until they have been
processed.
Information: Information is data that has been processed and given a context
that provides meaning.
Knowledge: Knowledge is how to interpret and apply information by applying
rules. Once this is done, decisions can be made based on the information
received.
The relationship between Data, Information and Knowledge:
For example;
"129/80" is data
"129/80 is my blood pressure at 10:27 on 24th September 2012" is information
[this information has a set of rules applied to it to turn it into knowledge]
"My blood pressure is healthy, no further action is needed" is knowledge
Reasons for encoding data, and the problems associated with this:
Why encode data?
Codes are easier to input than whole values
More data can be displayed on the screen at one time
Takes up less storage space than whole values
Easier to check using validation checks
Less human errors occur
Problem?
Encoding data means that detail is lost. E.g. colouring of jumpers; blue is
abbreviated to "B", as well as light Blue. Lost the detail of "light".
Topic 2 ­ THE VALUE AND IMPORTANCE OF INFORMATION
Information is used by many different people to make important decisions. It is
needed to fulfil the needs of higher and lower/day to day levels of management. It is
sometimes classed as a commodity as information may be bought or sold.
1

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

ICT AS Revision Notes
The importance of up-to-date, accurate, and complete information:
Up-to-date
Information should always be date stamped so that there is no danger of using out-
of-date information. If the information is personal information, there is actually a legal
requirement under the Data Protection Act that the information is kept up-to-date.
Consequences of using out-of-date information:
Organisation can be sued if out-of-date personal information is used causing
an individual to suffer (e.g. refuse a loan).…read more

Page 3

Preview of page 3

Here's a taster:

ICT AS Revision Notes
Topic 3 ­ QUALITY OF INFORMATION
How can information improve the quality of decision making?
Management decisions are based on information ­ the information needs to be high
quality for those decisions to be good ones.…read more

Page 4

Preview of page 4

Here's a taster:

ICT AS Revision Notes
- Directories
- Maps
- Invoices
- Reports
- Letters
- Newspapers
- Journals
- Manuals
Topic 4 ­ VALIDATION AND VERIFICATON
How can data errors occur?
Processing of incorrect data can lead to ridiculous and embarrassing outputs.
Errors can take time and effort to sort out and can be distressing for the people
affected.
It is essential that ALL ICT systems have some kind of error checking incorporated.
Transcription: The process of copying data from a source.…read more

Page 5

Preview of page 5

Here's a taster:

ICT AS Revision Notes
Double entry of data is where two people use the same data source to enter the
details on to the ICT system. The system will compare the two inputs and only if they
are identical will they be accepted. However this has larger costs (as more human
resources are required).
Double entry is also used as passwords are required to be entered twice when
setting up an account.…read more

Page 6

Preview of page 6

Here's a taster:

ICT AS Revision Notes
- Operating system
-
o Some packages will not run on older OS's such as Windows XP
- Communication
o Anyone in an organisation involved in working with a new system
should be consulted and involved in its development.
- G.I.G.O (garbage IN, garbage OUT)
o Poor quality or incorrect data will make output from the systems
useless.
Limitations of data processing (ICT) systems
Data processing systems are designed to complete tasks in the most efficient way.…read more

Page 7

Preview of page 7

Here's a taster:

ICT AS Revision Notes
- Post-implementation
o Once a system has been implemented users cannot be left to get on
with it
- Maintenance
o Systems need to be maintained so they function correctly.
- Cost
o Cost is always a limiting factor (will limit; time to spend developing
hardware/software buying potential, staff training potential, and ability
to update systems)
Topic 6 ­ THE USES OF ICT IN BUSINESS
Computer-aided design (CAD) (i.e.…read more

Page 8

Preview of page 8

Here's a taster:

ICT AS Revision Notes
Features:
- Computer (runs off a computer)
- CAD
- Automatic
- Re-usable
Advantages:
Costs are less (cheaper)
Much faster
Better quality and more consistent
Computer-based shopping systems
The retail environment has been changed dramatically by e-commerce.
EFT (electronic funds transfer)
Relates to the payments of good from one account to another.
o Credit/debit cards
o Intermediary payments (e.g. PayPal)
o Electronic purse (e.g.…read more

Page 9

Preview of page 9

Here's a taster:

ICT AS Revision Notes
Stolen credit cards may be used ­ seller must bear cost of this
Must be procedures in place to protect privacy of customers'
data
Expensive to set up payment systems
Stock control systems
Bar codes
Online shopping
E-commerce examples
o Online marketing
o Electronic funds transfer
o Just-in-time stock control
o Online transaction processing
o Electronic data interchange
o Automatic stock control systems
o Automated data entry systems
Features
o Catalogue
o Shopping cart/basket
o Checkout
o Payment system
Electronic point…read more

Page 10

Preview of page 10

Here's a taster:

ICT AS Revision Notes
Typically, a CAL package might contain:
- Tutorials
- Simulations
- Animations
- Drill and practice
- Tests
- Games
Computer based training (CBT) uses ICT systems for training in the workplace,
usually on a PC or portable device.…read more

Comments

Joel

is this for the as course?

Josh Piggott

Shut up Joel

Tyler Edwards

Shut Up Piggot

connor

Shut up Edwards


Sanjay Dayal

some topics missing

Phoebe-rose Burris

Home Entertainment is missing!

JonniOk

Shut up connor

crab_king

shut up jonni

AnaRita17

Not bad

AnaRita17

Just Topic 7,8,10,11 and 12 are missing

jamjortur

Shut up Ana

Similar ICT resources:

See all ICT resources »See all resources »