Question No. 1 a Design a code converter that converts a decimal digit from 8.4.-2.-1 code to BCD. [ 5 marks] b. Design a sequential circuit with two JK flip-flops A and B and two inputs Pandx. If P=0. the circuit remains in the same state regardless of the value of x. When P=1 and x=1, the circuit goes through the state transitions from 00 to 01 to 10 to 11 back to 00, and repeats. When P =1 and 30. the circuit goes through the state transitions from 0 to 11 to 10 to 01 back to 00, and repeats [10 marks) c. Design a code converter using two inputs (X1 and XO) and four outputs (Y3, Y2, YI and YO) that has the following truth table: 5 marks) x, X, Y, Y, Y, Y 0 1110 0 1 01 101 011 0 1 1 Question No. 2 a. Design a 4-bit asynchronous binary UP DOWN counter. Explain with proper truth table 110 Marks) b. The state diagram given below represents a traffic light system that transits between four states as given in the diagram. An external input x controls the transition between the states as given in the state diagram. An external output y determines whether it is safe for pedestrians to cross, where y = 1 indicates SAFE and y=0 indicates NOT SAFE, as given in the state diagram. 0/0 | 10 Marks] RED 1/0 1/0 YELLOW YELLOW 1/0 (1/1 0/0 GRE 0/1 1) Determine the number of state variables necessary to represent the states present and assign values to these states in some logical order (Hint: you can assign the starting value to Red and then proceed in that order) ii) Using a JK flip flop and a RS flip flop, design a sequential circuit for the above system Question No. 3 Find the fan out for both circuits and compare which one is better. Here, = 45 115 marks