Important MCQs of DLD

By: Prof. Dr. Fazal Rehman | Last updated: April 30, 2025

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1. : Why do we use a demultiplexer?



2. : Which is an example of synchronous inputs?



3. : Which one is the second step of making a transition table?



4. : An OR gate can be imagined to look like ____________



5. : The change from a current state to the next state is determined by



6. : Each gate takes time for delay of



7. : In which combination of gates is an arbitrary Boolean function not possible?



8. : Which one of the following is used to simplify the circuit that determines the next state?



9. : When both inputs are ____________, the NAND latch works.



10. : ____________ adders are needed to construct an m-bit parallel adder.



11. : ________________ is converted by a multiplexer with a register circuit.



12. : Changing input in more than one state is called _______________



13. : Select the function of a multiplexer.



14. : Select the combinational logic circuit which produces a specific binary word or number.



15. : Which circuit can be used as a parallel to serial converter?



16. : What is the function of shift registers?



17. : The 7-segment display produces output



18. : What is used for BCD to 7-segment conversion?



19. : Select the universal gate.



20. : Which one is NOT an operation provided by a magnitude comparator?



21. : The enable input of the shift register is commonly called?



 

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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