Q1. MUX contains AND gate followed by
(A) AND gate
(B) an OR gate
(C) NAND gate
(D) NOR gate


Q2. To implement 2^n:1 MUX by using 2:1MUX ,the total number of 2:1MUX required
(A) 2n
(B) n^2
(C) n/2
(D) 2^n - 1


Q3. A basic S-R flip-flop can be constructed by cross-coupling which basic logic gates?
(A) AND or OR gates
(B) NOR or NAND gates
(C) AND or NOR gates
(D) XOR or XNOR gates


Q4. Memory that loses its contents when power is lost is:
(A) Static
(B) random
(C) volatile
(D) nonvolatile


Q5. Racing occurs in which type of flip flop
(A) D FF
(B) SR FF
(C) RS FF
(D) JK FF


Q6. if both the inputs are high than output also high than we using which type of gate
(A) AND
(B) NAND
(C) OR
(D) NOT


Q7. number of NOR gate require to make AND gate
(A) 1
(B) 2
(C) 3
(D) 4


Q8. number of NAND gate is require to make OR gate
(A) 1
(B) 2
(C) 3
(D) 4


Q9. number of NAND gate is require to make AND gate
(A) 1
(B) 2
(C) 3
(D) 4


Q10. number of NOR gate require to make NOT gate
(A) 1
(B) 2
(C) 3
(D) 4


Q11. number of NAND gate require to make NOT gate
(A) 0
(B) 1
(C) 2
(D) 3


Q12. number of NOR gate require to make NAND gate
(A) 2
(B) 3
(C) 4
(D) 5


Q13. number of NAND gate require to make NOR gate
(A) 2
(B) 3
(C) 4
(D) 5


Q14. number of NOR gate require to make EX NOR gate
(A) 2
(B) 3
(C) 4
(D) 5


Q15. number of NAND gate require to make EX OR gate
(A) 2
(B) 3
(C) 4
(D) 5


Q16. number of NAND gate require to make EX NOR gate
(A) 3
(B) 4
(C) 5
(D) 6


Q17. number of NOR gate is require to make EX-OR gate
(A) 3
(B) 4
(C) 5
(D) 6


Q18. one advantage TTL over CMOS is that TTL is
(A) less expensive
(B) not sensitive to electrostatic discharge
(C) faster
(D) more widely available


Q19. How many different states does a 3 bit asynchronous counter have?
(A) 2
(B) 4
(C) 8
(D) 16


Q20. The BCD number for decimal 347 is
(A) 1100 1011 1000
(B) 0011 0100 0111
(C) 0011 0100 0001
(D) 1100 1011 0110


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