1. For the following expression, use ONLY DeMorgan's theorem (no reduction or simplification) to obtain an equivalent expression which contains AND's and OR's of the input (e.g, A) and their complements (e.g., A). There should be no complements (bars) in the final expression except for those over the inputs. F=| (A + B)-(C+D) 2. A bus arbiter has the following configuration with level 1 having the highest priority.If Devices 3, 4, a 5 request the bus simultaneously, which device will be granted use of the bus? (3 pts) 3