由上至下同由下至上設計

(由由下至上過程跳轉過嚟)

由上至下設計top-down design)同由下至上設計bottom-up design)廣義上係指兩種處理資訊嘅做法,由上而下係指將一個有返咁上下複雜系統整體噉嚟睇先,跟住再將個系統啲組成部份逐個逐個攞嚟睇(睇咗上層嘅嘢先睇下層),而由下至上係指將啲組成部份逐個逐個攞嚟睇先,跟住先將個系統整體噉嚟分析。

例如喺軟件工程上,由上至下係指諗好咗隻軟件「要有咩功能」先,諗完先至諗源碼要點寫,而由下至上就係指郁手寫咗啲源碼先,「柞源碼要點樣砌埋一齊成一個整體」就遲啲先算[1]

睇埋

編輯
  1. Bottom Up or Top Down?. Embedded computer design.
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