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???
04/25/07 19:44
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Msg Score: +1
 +1 Informative		 #137942 - A.K.A. 'conservative' design?
Responding to: ???'s previous message
Many transit specifications use a factor of 2 for margin. Twice the required processor speed, twice the required memory, use no more than one half of the power supply rated output, no more than one half of the output driver rated load, and so on. I am guessing that '2x' was pulled out of the air by someone, and it stuck.

You have to account for feature creep. This should not happen to any significant extent at the outset, if the spec is well written. However, products will often be updated and 'improved' over time, and it is wise to have resources available for these future product variants.


List of 29 messages in thread
TopicAuthorDate
defensive design            01/01/70 00:00      
   re:defensive design            01/01/70 00:00      
   look at PC mainboards            01/01/70 00:00      
   proper design begins with requirements analysis            01/01/70 00:00      
      wishful thinking            01/01/70 00:00      
         it's a common problem and an easy fix            01/01/70 00:00      
            great when you can say no            01/01/70 00:00      
      you are a lucky man            01/01/70 00:00      
      re:walk away            01/01/70 00:00      
   You learn to be adaptive            01/01/70 00:00      
   A.K.A. 'conservative' design?            01/01/70 00:00      
      If you\'re clever enough ...            01/01/70 00:00      
   The problem with "specs"            01/01/70 00:00      
      It's not a guess, it's a contract.            01/01/70 00:00      
   This is not a new idea.            01/01/70 00:00      
      feasibilty study and embedded design!            01/01/70 00:00      
         They don't have to be experts ...            01/01/70 00:00      
            always do that            01/01/70 00:00      
         unfortunately "should" died some years ago            01/01/70 00:00      
   Idea nice but not for all embedded aplyable...            01/01/70 00:00      
      Less of a problem as time goes on...            01/01/70 00:00      
         Question acording the code size...            01/01/70 00:00      
            C & Asm            01/01/70 00:00      
      The more such is the case, the more            01/01/70 00:00      
         That\'s the trick!            01/01/70 00:00      
            a case in point            01/01/70 00:00      
               if the boss (or the salespeople) would know...            01/01/70 00:00      
               Aren't you senior enough to select where you work?            01/01/70 00:00      
   an added comment            01/01/70 00:00      

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