Full Marks: 60
Pass Marks: 24
Time: 3 hours

Attempt any two questions: (2 x 10 = 20)

1. Explain the magnitude comparator and also design a logic diagram for 4 bit magnitude comparator.
2. What do you mean by decoder? Design a 3 to 8 line decoder using 2 to 4 line decoder and explain it.
3. What do you mean by ripple counter? Explain the design procedure of sequential circuits.

Attempt any eight questions: (8 x 5 = 40)

4. Convert the following hexadecimal number to decimal and octal numbers.
   • a) 4FF
   • b) 6FED
5. Explain the error detection code with example.
6. Explain the duality theorem with example.
7. Design half adder logic circuit using only universal gates.
8. Draw a logic circuit of 8*1 multiplexer.
9. Design the 4 bit parallel binary adder.
10. Explain the PLA with the block diagram.
11. Explain the R-S flip flop with truth table.
12. Explain the shift register with example.
13. Write short note on (any two):
    • a) Binary counter
    • b) State reduction
    • c) Negative edge triggering