Analog IO VS Digital IO ?

[aaronhe]

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

Thanks a lot

 

[karesz]

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.

 

[aaronhe]

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

 

[karesz]

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.

 

[casey480]

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

 

[ljxpjpjljx]

analog IO will have more performance limits!