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| (点击题目可以在互联网中搜索该题目的相关内容) 日期：2006-11-27 23:47:59 来源： 作者： 点击： | |
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Do you think that to write a good ladder program do we need to draw time diagram of all inputs and outputs ( happen in a cycle )？ Its not essential, but its very good design practice, and is very heavily used in electronics design. A well-written timing diagram will help you with most aspects of writing good quality code. (a) Plan the code, taking into consideration rate requirements, cycle times etc. (a) Write the code (use the timing diagram as the spec) (b) Commission the code (check operation against spec) (c) Document the way the system works for yourself and others (d) Help identify ways to speed up the machine or system | |
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