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

Data capture, preparation and data input (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/ Validation and verification of data (c) explain the techniques of validation and verification, and describe validation tests which can be carried out on data * /Validation and verification of data/ Outputs from a system (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/ Knowledge-based systems (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/