A-level Computing 2009/CIE/Computer systems, communications and software/Handling of data in information systems


 * (a) describe manual and automated methods of capturing and inputting data into a system, including form design, keyboard entry, barcodes, Optical Mark Recognition (OMR), magnetic stripe cards, Optical Character Recognition (OCR), sensors and data logging, touch screens, chip and pin
 * (b) describe image capture by use of a scanner, video capture card and digital camera/camcorder

* /Data capture, preparation and data input/


 * (c) explain the techniques of validation and verification, and describe validation tests which can be carried out on data

* /Validation and verification of data/


 * (d) describe possible output formats such as graphs, reports, interactive presentations, sound, video, images and animations stating the benefits and drawbacks of each format
 * (e) discuss the need for a variety of output formats according to the target audience

* /Outputs from a system/


 * (f) describe knowledge-based (expert) systems, how they are created and how they function
 * (g) explain the use of knowledge-based (expert) systems as a diagnostic tool

* /Knowledge-based systems/