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2.1.3

QuestionAnswer
Thinking procedurally steps 1. Decomposition 2. To identify solutions, look at each component and figure out what is needed to solve it (data, on-screen elements, additional sub-tasks) 3. Work out the order the sub-procedures will be run in
decomposition the process of breaking down a problem into smaller and smaller parts until each aspect of the problem can be dealt with effectively
Top-down modular design uses stepwise refinement lowest sub-tasks can be given to individual programmers, or small teams to be written and tested in isolation before integrated to the main code as sub-procedures
Stepwise refinement Each branch is repeatedly subdivided until the task is broken down into the lowest level
Subprogram order (working it out) Many programs are event-driven and only take action in response to an event. The order of these events can be unpredictable. Some programs involve a predictable series of steps completed in order
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