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Analog IO VS Digital IO ?

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aaronhe

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Who can tell me the difference between Analog IO and Digital IO? I'm puzzle on them.

Thanks a lot
 

The names/words tells us:
Analog is for analog voltages of 0...+limit/range (event. - too)
Digital = signals can exist in two values "0 & 1" (~0.0V & some "high" logic level, as 3/5 or so Volts_depends on logic family)
K.
 

Do you mean analog IO can accept analog sequential signals, but Digital IO just can accept digital gignals (1 and 0) ?
 

Yes, basically, but these sentences are too generell...
In detail, in concret situation analog can work with digital signals too, but its is an extrem efect.
K.
 

Also, digital I/O cells may have a Schmidt trigger on them, which would be desctruvtive for an analog signal.
 

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