Information Systems : Model

This model can be used to describe the operation of any information system.

The model has three essential components :

• Input : Information going into an information system.

• Processing : Organisation and manipulation of data by an information system.

• Output : Information produced by an information system.

Most information systems also have a fourth component :

• Store : The ability to remember information temporarily or permanently.

Information systems usually include many inputs and outputs. The next pages contain two more detailed examples of information systems.

GCSE ICT Companion 04 - (C) P Meakin 2004