Design : Planning

You will need to use your common sense to decide what order to design the different parts of the system in. In the documentation you must include evidence that you have produced a design for your system before you created it. The sort of evidence you need to provide will be different for the different parts of the system.

This table gives you some examples of the items you may need to design for a task. It also suggests the sort of evidence that you may want to include for the different types of item designed.

Type of Task Items to Include in Plan
Spreadsheet
  1. Sketches of possible layouts including labels, figures and formulae, column widths and row height and cell and data formats.
  2. Justification of choice of layout.
  3. Explanations of what the formulae will do.
  4. Flowcharts showing the process to be carried out by any macros that are used.
  5. Data capture form if required.
Database
  1. Structure of records in each table including field types, lengths, coding and validation checks that are used.
  2. Identification of the primary key field for each table.
  3. Any relationships between different data tables if a relational database is being used.
  4. Information about the queries that you will use. What should they select and what will the criteria need to be to make the correct selection.
  5. Sketched layouts of any reports that will be printed. Where will the reports obtain data from ? Will the reports be columnar or tabular ? Are the records sorted into a particular order ?
  6. Flowcharts showing the process to be carried out by any macros that are used.
  7. Data capture form if required.
  8. Justification of choices made.
Word
Processing,
Graphics
or DTP
  1. Sketches of possible page layouts including position of frames and graphics, headers and footers.
  2. Choice of fonts for headings, sub-headings, body text etc.
  3. Choice of graphics including clipart.
  4. A number of alternative designs should be presented and then a justified choice made about the design to implement.
 
Data
Logging
  1. Quantities to measure.
  2. Types, ranges and positions of sensors.
  3. Period of logging and time interval between each measurement.
  4. How the data will be presented (type of graph, table, averages etc.)
Control
System
  1. What sensors and devices the system will use.
  2. Where the sensors and devices are located.
  3. A flowchart showing the process that will control the system.

For most tasks you will also need to describe how the inputs that are to be put into the system will get there. Important points to consider are :

GCSE ICT Companion 04 - (C) P Meakin 2004