AS Computing F452

AS Computing F452

1. A computer program is a set of instructions written to perform a specific task

2. Designing the User Interface (UI)

   • Needs to be User Friendly
   • 1. Allow user to input data easily
     • 2. Allow user to input data accurately
       • 3. Produce clear and understandable output
   • Be efficient
     • Fast response & processing times
       • Make good use of IO devices
         • Increase productivity of end user
     • Be satisfying to the end user
       • User is comfortable using it
         • Easy to learn (no training required)
           • Use familiar tools so user can reapply their existing skills

3. Designing Input Screens

   • Data is enter via a GUI
     • GUI - Graphical User Interface
   • Factors to consider when designing an INPUT SCREEN
     • The user
     • Layout
     • Order
       • Users read info left to right so make the layout follow that format i.e having the submit button on the bottom right
     • Validation
     • GUI Objects
     • Online Help & Information