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top-down design

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top-down design
A design technique that starts with the highest level of an idea and works its way down to the lowest level of detail. See top-down programming.
top-down design [′täp ¦dau̇n di′zīn]
(industrial engineering)
A design methodology that proceeds from the highest level to the lowest and from the general to the particular, and that provides a formal mechanism for breaking complex process designs into functional descriptions, reviewing progress, and allowing modifications.

(programming)top-down design - (Or "stepwise refinement"). The software design technique which aims to describe functionality at a very high level, then partition it repeatedly into more detailed levels one level at a time until the detail is sufficient to allow coding. This approach to software design probably originated at IBM, and grew out of structured programming practices.


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The alternative to this top-down design model is the strategy underlying the large family of phones that run Microsoft's Windows Mobile software, which is designed to serve highly diverse audiences.
In this paper, the author proposes a strategy to enforce students to use the top-down design approach to solve problems from early on by introducing the concept of functions right after the discussion of output statements and having students to start using simple functions to solve problems.
 
 
 
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