QUESTION 5 (a) Define hazards. How can the hazards in asynchronous circuit be removed? (3 marks) (b) Wnite the Venlog code of a 4-bit binary up-down counter with provision to load data as shown in Figure 5. The counter has three control inputs for operations: UP, DOWN and LOAD with the order of precedence is LOAD, UP and DOWN. (5 marks) (c) Derive the complete state diagram by analyzing the finite state machine shown in Figure 6. (7 marks) IN3: INO LOAD UP 23:00 DOWN CLK Rajah 5 (Figure 5) EN JQ QO MAX Q Q1 Kap- - CLK Rajah 6 (Figure 6)