1 AQA ICT AS Level © Nelson Thornes 2008 1 ICT Systems.

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1AQA ICT AS Level © Nelson Thornes 20081AQA ICT AS Level © Nelson Thornes 2008

ICT Systems

Systems

What is a system?A procedure that involves input, processing and output.

So, does a system always need a computer?No, you can have a manual system too.

Manual system

A card index used in a library. Users can find out which books the library has if they know the name of the author as this is how the card index has been sorted. They could be arranged by ‘Title’ instead.

Manual system

INPUT?You ask if the library has any books by a particular author.

PROCESS?You look through the cards to find what the library has.

OUTPUT?From the cards you get a list of titles.

ICT systems

What is ICT? This?

No. ICT is the use and transmission of data to produce information after processing.

Samples of outputs

Click on these document types to see a sample.

• Mail merged letter• Order• Invoice • Statement• Tax disc

If you are already familiar with these documents, click here.

Business letter with mail merge

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Invoice

Statement

Tax disc

So, is this an ICT system?ICT Systems

No. This is just the hardware. An ICT system also involves people, data, procedures, information and software.

ICT systems are those where the output from the system goes directly to a human being or into another ICT system.

At a supermarket checkout, a part of the output is an itemised receipt, which goes directly to the customer.

Other outputs, for example, are items bought which input into another part of the system for stock control.

What is an ICT System

• A system uses INPUT, PROCESS and OUTPUT.• ICT is the use of data and information.• ICT systems need people, hardware, software,

data, information and procedures.

Summary

1 AQA ICT AS Level © Nelson Thornes 2008 1 ICT Systems.

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