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Digital or Analog

 
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RocketRod



Joined: 02 Jun 2005
Posts: 293
Location: Colorado Springs, CO

PostPosted: Tue Feb 28, 2006 8:24 pm    Post subject: Digital or Analog Reply with quote

Could someone please tell me what the difference is of digital or analog? Some I/O cards state that the are capable of digital and analog inputs. I am not totally sure, but are LEDS digital, and switches digital, and then what would analog be? Or point me to a good web discussion. I did a search here and did not find anything definitave. Thanks in advance.
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Rodney

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jackpilot
Site Admin


Joined: 25 Apr 2004
Posts: 1024
Location: Montreal

PostPosted: Tue Feb 28, 2006 10:49 pm    Post subject: Reply with quote

As far as I get it, digital is a switch (input) or a LED (output), analog is a variable input..ie throttle, brakes etc or a variable output like a servo.
Probably you will get more sophisticated answers...
Cheers
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Jack
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RocketRod



Joined: 02 Jun 2005
Posts: 293
Location: Colorado Springs, CO

PostPosted: Wed Mar 01, 2006 2:07 am    Post subject: Reply with quote

That's what I am finding out too. Hit most of the I/O board sites, and I guess they expect everyone to be born with an electrical degree. I did see that what you said is right in line with what I found. If it's varible, then its analog. So my best guess is; Toggles, momentary, micro switches and 45 degree are digital, pots & servos are analog. Hope I'm at least a little correct. I'm not sure how they would relate to voltage, watts or amps though. I'm a wrench, not a spark chaser. Thanks Jack!
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Rodney

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mauriceb



Joined: 22 Aug 2005
Posts: 1051
Location: Gravenhurst, Ontario - Canada

PostPosted: Wed Mar 01, 2006 7:09 am    Post subject: Reply with quote

Jack & Rodney got it right, but here is a slightly more technical explanation. I've posted a link to this site before, but you may want to look at this particular page on the site:
http://www.kpsec.freeuk.com/analogue.htm

Regards,
Maurice
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RocketRod



Joined: 02 Jun 2005
Posts: 293
Location: Colorado Springs, CO

PostPosted: Wed Mar 01, 2006 9:19 am    Post subject: Reply with quote

Thanks Maurice! I've got it bookmarked. Answers alot of my questions.
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Rodney

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