I agree, BUT:If you don't know the role of D1 in that circuit, then you are not yet ready to work as a hardware engineer. Delve back into your texts.
what if despite the 1 missing fact he can write the control system for the local nuclear plant . . . ? everyone left-handed should be killed ? (they won't manage anyway)If you don't know the role of D1 in that circuit, then you are not yet ready to work as a hardware engineer.