Design Con 2015

Are Today's Designs Bound by the Constraints of Yesteryear?

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Jacob
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Re: Numbering systems
Jacob   10/31/2014 12:04:19 AM
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"I agree, of course. It all depends on what is being displayed -- but if the display were DC Volts, for example, and this ranged from 10 to the left through 0 to 10 on the right, then I'm saying that if the meter manufacturer omitted the '-' and '+' signs (which I personally thing is a bad thing), the operator would assume -10V on the left and +10V on the right."

Max, thanks for agreeing with the comment. If you are an expert you can judge it's either positive or negative. But for other both side of the numbers resembles the same value; which may leads to wrong reading.

Max Maxfield
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Re: Numbering systems
Max Maxfield   10/30/2014 10:37:23 AM
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@Jacob: Max, it's a general assumption that values beyond zeros are positive and other side is negative. But may not be true always and depends on case to case.

I agree, of course. It all depends on what is being displayed -- but if the display were DC Volts, for example, and this ranged from 10 to the left through 0 to 10 on the right, then I'm saying that if the meter manufacturer omitted the '-' and '+' signs (which I personally thing is a bad thing), the operator would assume -10V on the left and +10V on the right.

Jacob
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Supply Network Guru
Numbering systems
Jacob   10/30/2014 1:10:57 AM
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"In many cases, in fact, meter manufacturers also omitted the "-" symbols on the negative values, so the faceplate would read 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10. This was done on the basis that it was generally understood that negative values would be presented on the left, while positive values would be presented on the right."

Max, it's a general assumption that values beyond zeros are positive and other side is negative. But may not be true always and depends on case to case. For example, in pendulum system both sides of zeros are counting as positive. In length measurements also the same because there is no negative length



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