1. (1)Describe your understanding of combinational logic and (2)give an example of combinational logic with three and gates and three or gates, (3) write the boolean equation for the combinational logic example that you give in (2) 2. Please compare and contrast a 4-bit ripple-carry adder with a 4-bit carry-lookahead adder. When you are a 4-bit CPU designer, you will choose and use which one? 3. Describe in words what the state machine below does. Using binary state encodings, complete a state transition table and output table for the FSM. Write Boolean equations for the next state and output and sketch a schematic of the FSM. Reset B Oce SO Q: 1 S1 Q: 1 S2 Q:0 B Figure 1 State transition diagram