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

2. 2 AQA ICT AS Level © Nelson Thornes 2008 2 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.

3. 3 AQA ICT AS Level © Nelson Thornes 2008 3 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.

4. 4 AQA ICT AS Level © Nelson Thornes 2008 4 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.

5. 5 AQA ICT AS Level © Nelson Thornes 2008 5 ICT systems What is ICT? This? No. ICT is the use and transmission of data to produce information after processing.

6. 6 AQA ICT AS Level © Nelson Thornes 2008 6 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.here

7. 7 AQA ICT AS Level © Nelson Thornes 2008 7 Business letter with mail merge Back to documents menu

8. 8 AQA ICT AS Level © Nelson Thornes 2008 8 Back to documents menu Order

9. 9 AQA ICT AS Level © Nelson Thornes 2008 9 Invoice Back to documents menu

10. 10 AQA ICT AS Level © Nelson Thornes 2008 10 AQA ICT AS Level © Nelson Thornes 2008 Statement Back to documents menu

11. 11 AQA ICT AS Level © Nelson Thornes 2008 11 AQA ICT AS Level © Nelson Thornes 2008 Tax disc Back to documents menu

12. 12 AQA ICT AS Level © Nelson Thornes 2008 12 AQA ICT AS Level © Nelson Thornes 2008 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.

13. 13 AQA ICT AS Level © Nelson Thornes 2008 13 AQA ICT AS Level © Nelson Thornes 2008 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

14. 14 AQA ICT AS Level © Nelson Thornes 2008 14 AQA ICT AS Level © Nelson Thornes 2008 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