Extreme noob electronic question

[Martin Naef]

On 18.01.2013 6:16, Peter Korsten wrote:
> I completely understand digital circuits. They're just like algorithms,
> all ones and zeros, completely logical.
>
> Except for the capacitors and resistors that you need even in a digital
> circuit. At that point, my brain just switches off...

It's the famous difference between theory and practice. Every digital 
circuit is also an analogue circuit.

Which reminds me to finally check my galvanic decoupler for the speed 
controller with an oscilloscope to see if the output sufficiently 
resembles a square wave... ;-)

Martin