DLD Solved MCQs Answers PDF

1. Select the number that Shift register has in the Integrated circuit
(A). 74124
(B). 74123
(D). 74195
(D). 74154
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Answer: c. 74195
2. The 16×4 RAM show that each memory location is of
(A) 2bits
(b) 8bits
(c). 4bits
(d). 16bits
Answer: c. 4bits
3. The 3×8 decoder will have________?
(A) 4 inputs
(B). 3 inputs
(C). 5 inputs
(D). 6 inputs
Answer: b. 3 inputs
4. With the Adding 1001 and 0010 produce___________output?
(A). 0
(B). 1111
(C). 1011
(D). 1010
Answer: c. 1011.
5. The process To shift the data from the right side to the shift register SH/LD pin must be equal to
(A). 0
(B). 2
(C). 1
(D). None
Answer:b. 2
6. The IC type 7483 has_________?
(A). 1 bit IC
(B). 4 bits IC
(C). 3 bits IC
(D). 2 bits IC
Answer: b. 4 bits of IC
7. 1 means in most of the logic gates is?
(A). 0V
(B). 5V
(C). 1V
(D) 10V
Answer: b. 5V
8. In the 14 pin gate, pin number 14 is marked through ___________?
(A). ground
(B). Vdd
(C). Vcc
(D). AC
Answer: c. Vcc.
9. When J and complement of K are 1, flip-flop QA after the shift is equal to____________?
(A). reset
(B). 0
(C). 1
(D). defined
Answer: c. 1
10. what we use for to clear the flip-flops
(A). Multiplexer
(B). push button
(C). toggle switch
(D). Demultiplexer
Answer: c. toggle switch
11. Select the Number of ripple counter in IC ___________ are
(A). 7492
(B). 7865
(C). 7493
(D). 7654
Answer: c. 7493
12. What is called When the output is equal to zero?
(A). A=B
(B). A>B
(C). A<B
(D). None
Answer: a. A=B

13. 1. Two cross-coupled NAND gates produce what?
(A). RS flip-flop
(B). SR Latch
. D flip-flop
(D). master-slave flip-flop
Answer:b. SR Latch
14. Select the values Toggle switches to have
(A). 1
(B). 0
(C). both a and b
(D). 2
Answer: c. both a and b
15. particularly gates work on
(A) 3V
(B) 4V
(C) 5V
(D) 2V
16. The clock output and master-slave output produced?
(A). chart
(B). map
(C). timing diagram
(D). table
Answer: c. timing diagram
17. In the Full adder circuit uses two integrated circuits one is 7486 select another from the following?
(A). 7483
(B). 7400
(C). 74151
(D) 7500
Answer: b. 7400
Answer: a. 4-bit ripple counter
18. Select the state of WE to Write operation in a memory
(A). 1
(B). reset
(C). 0
(D). cleared
Answer: c. 0
19. The ME input in RAM known as
(A). memory enabled
(B). memory erase
(C). mechanical engineer
(D) mode erase
Answer: a. memory enabled
20. Select the combined number for function simplification
(A). 1
(B). 0
(C). 2
(D). 3
Answer: a. 1
21. The Strobe S in a mux used as
(A) reset
(B). enable
(C). clear
(D). stop
Answer: b. enable
22. The Integrated circuit number 74151 consists of
(A). 2×1 mux
(B). 3×8 decoder
(C). 8×1 multiplexers
(D). 4bit counter
Answer: c. 8×1 multiplexers
23. When WE= x than Select the operation is
(A). running
(B). storing
(C). writing
(D). disabled
Answer:c. writing
24. The Ripple counter IC has____________pins?
(A). 10 pins
(B). 14 pins
(C). 12 pins
(D). 11 pins
Answer: b. 14 pins
25. The ratio of two numbers in an operation that find whether a number is greater, equal or less than other number is known as
(A). Magnitude Comparator
(B). Logical circuit
(C). Logic Operator
(D). None of the above
Answer: d. None of the above
26. ROM simulator changes binary codes into__________?
(A) gray code
(B). octal
(C). hex
(D). BCD code
Answer: a. gray code
27. The ROM simulator adds two 3bit and 2bit numbers to give an output of
(A). 2 bits
(C) 4 bits
(C) 3 bits
(D).5 bits
Answer: b. 4 bits
28. The Four gates in a package are known as?
(A). quadruple
(B). octruple
(C). dualruple
(D). biruple
Answer: a. quadruple
29. IF E=0 in Up-down counter with Enable mode than the counter is
(A). disable
(B). enable
(C) running
(D). None
Answer: b. enable
30. The 7404 is a____________?
(A). single inverter
(B). decimal inverter
(C). binary inverter
(D). hex inverter
Answer: d. hex inverter
31. The Decimal digit in BCD can be expressed through?
(A). 1 input line
(B). 4 input lines
(D). 3 input lines
(D) 2 input lines
Answer: b. 4 input lines
32. To start the game in lamp handball the start switch starts at?
(A) extreme right side
(B). extreme left side
(C). extreme backside
(D). both a and b
Answer: d. both a and b

MCQs of Digital Logic Design (DLD)

Introduction to Digital Systems

  1. Analog vs. Digital signals MCQs
  2. Binary numbers and arithmetic MCQs
  3. Logic levels and noise margins MCQs

Boolean Algebra

  1. Basic logic operations (AND, OR, NOT) MCQ
  2. Laws and theorems of Boolean algebra MCQ
  3. De Morgan’s Theorems MCQ
  4. Canonical forms (Sum of Products, Product of Sums) MCQ
  5. Simplification techniques (Karnaugh Maps, Quine-McCluskey method) MCQ

Combinational Logic

Logic Gates

  1. Basic gates (AND, OR, NOT) Gat MCQ
  2. Universal gates (NAND, NOR) Gat MCQs
  3. XOR and XNOR gates MCQ

Combinational Circuits

  1. Design and analysis of combinational circuits MCQ
  2. Multiplexers and Demultiplexers MCQ
  3. Encoders and Decoders MCQ
  4. Binary Adders (Half adder, Full adder) MCQ
  5. Subtractors and Arithmetic Logic Units (ALU) MCQ
  6. Comparators MCQ in DLD

Sequential Logic

Flip-Flops and Latches

  1. SR Latch, D Latch MCQ
  2. Flip-Flops (SR, D, JK, T) MCQ
  3. Characteristic equations and excitation tables MCQ
  4. Edge-triggered vs. level-triggered devices MCQ

Counters and Registers

  1. Synchronous, Asynchronous (ripple), Up/Down counters MCQs
  2. Shift registers (SIPO, PISO, SISO, PIPO) MCQs

State Machines

Finite State Machines (FSMs)

  1. Moore and Mealy machines MCQs

Memory and Programmable Logic MCQs

Memory Devices

  1. Read-Only Memory (ROM)
  2. Random Access Memory (RAM)
  3. Programmable Logic Devices (PLDs) MCQs
  4. Field Programmable Gate Arrays (FPGAs) MCQs

More MCQs of Digital Logic Design (DLD)

Computer Science Repeated MCQs Book Download

MCQs collection of solved and repeated MCQs with answers for the preparation of competitive exams, admission test and job of PPSC, FPSC, UPSC, AP, APPSC, APSC, BPSC, PSC, GOA, GPSC, HPSC, HP, JKPSC, JPSC, KPSC, KERALAPSC, MPPSC, MPSC, MPSCMANIPUR, MPSC, NPSC, OPSC, RPSC, SPSCSKM, TNPSC, TSPSC, TPSC, UPPSC, UKPSC, SPSC, KPPSC, BPSC, AJKPSC ALPSC, NPSC, LPSC, SCPSC, DPSC, DCPSC, PSC, UPSC, WVPSC, PSCW, and WPSC.

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