In uk.d-i-y, robgraham wrote:
I've wired up a friend's garage and I would like to leave him a
straightforward drawing of how it was done so that he has a record for
any changes.

What would be the simplest PC package to do this on ?

I guess you've not done this kind of thing before so it would be a good
idea to rough the circuit out on paper before starting to grapple with
the PC software. Presumably being "just" a garage it's not too
fiendishly complicated.

Having got that far you might decide that the PC would be a bit of a
waste of time, unless you find that kind of thing educational or
enjoyable.

--
Mike Barnes