Q1. K-map is used to:
(A) Minimize the number of flip-flops in a digital circuit
(B) Minimize the number of gates in digital circuit
(C) Minimize the number of gates and fan in of a digital circuit
(D) Design Gates
Answer: Minimize the number of gates in digital circuit
Explanation:
Q2. Which of the following IC package can be plugged into socket?
(A) DIP
(B) Surface mount
(C) T-load surface mount
(D) All of these
Answer: DIP
Explanation:
Q3. Base 2 refers to which number system?
(A) binary
(B) decimal
(C) binary coded decimal
(D) hexadecimal
Answer: binary
Explanation:
Q4. Base 10 refers to which number system?
(A) binary
(B) decimal
(C) binary coded decimal
(D) hexadecimal
Answer: decimal
Explanation:
Q5. Exclusive or is an:
(A) Odd function
(B) Even function
(C) Equivalence function
(D) None of these
Answer: Odd function
Explanation:
Q6. Each square in K-map represent:
(A) SOP
(B) POS
(C) Minterm
(D) Literal
Answer: Minterm
Explanation:
Q7. For which of the following flip-flop the output clearly defined for all combinations of two inputs?
(A) T Flip flop
(B) SR Flipflop
(C) J K flip-flop
(D) Q Flipflop
Answer: J K flip-flop
Explanation:
Q8. Base 16 refers to which number system?
(A) binary
(B) decimal
(C) binary coded decimal
(D) hexadecimal
Answer: hexadecimal
Explanation:
Q9. SR Flip flop can be converted to T type flip flop if?
(A) S connected to Q
(B) R connected to Q
(C) Both S and R are shorted
(D) S and R are connected to Q and Qbar respectively
Answer: S and R are connected to Q and Qbar respectively
Explanation:
Q10. Which of the following has the highest fan out?
(A) TTL Standard
(B) Schottky TTL
(C) ECL
(D) CMOS
Answer: CMOS
Explanation:
Q11. The number of bits used to represent a BCD digit is:
(A) 2
(B) 4
(C) 8
(D) 1
Answer: 4
Explanation:
Q12. Once a PAL has been programmed:
(A) Outputs are only active HIGH’s
(B) Outputs are only active LOW’s
(C) It cannot be reprogrammed.
(D) None of these
Answer: It cannot be reprogrammed.
Explanation:
Q13. Which of the following has the smallest propagation delay?
(A) TTL Standard
(B) Schottky TTL
(C) ECL
(D) CMOS
Answer: ECL
Explanation:
Q14. Most widely used bipolar family is:
(A) TTL
(B) DTL
(C) ECL
(D) None of these
Answer: TTL
Explanation:
Q15. PLAs, CPLDs, and FPGAs are all which type of device?
(A) SDRAM
(B) EPROM
(C) SLD
(D) PLD
Answer: PLD
Explanation:
Q16. Which one of the following is correct about the speed power product of an IC:
(A) Optimum SPP is desirable
(B) Low SPP is desirable
(C) High SPP is desirable
(D) None of these
Answer: Low SPP is desirable
Explanation:
Q17. One application of a digital multiplexer is to facilitate:
(A) code conversion
(B) parity checking
(C) parallel-to-serial data conversion
(D) None of these
Answer: parallel-to-serial data conversion
Explanation:
Q18. The output of an OR gate is LOW when
(A) all inputs are LOW
(B) all inputs are HIGH
(C) any input is HIGH
(D) any input is LOW
Answer: all inputs are LOW
Explanation:
Q19. Which one is the better choice when considering the power dissipation?
(A) TTL Standard
(B) Schottky TTL
(C) ECL
(D) CMOS
Answer: CMOS
Explanation:
Q20. The generic array logic (GAL) device is
(A) one-time programmable
(B) reprogrammable
(C) Cannot be programmed
(D) None of these
Answer: reprogrammable
Explanation:
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