I’m a completely newbie, still waiting for by arduino to arrive, so have been reading the arduino notebook and booklet to get to grips with a few ideas.
I’m a programmer by trade, and electronics isn’t my strong point (not yet anway!) :
I noticed that in the schematics the input from say a switch or a variable resistor isn’t directly wired like
5V ----> variable resistor ----> Pin In
or a switch like
5V ----> switch ----> Pin In
The diagrams show a resistor like so :
Why is this?
I know I need a lesson in Electronics 101 !!! :