Digital Logic Design MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What is a ‘circuit diagram’?
A. A visual representation of an electrical circuit showing all components and connections
B. A list of circuit components
C. A table of logical operations
D. A set of written instructions
Answer: A visual representation of an electrical circuit showing all components and connections
What is a truth table used for in digital logic design?
A. To list all possible input combinations and their corresponding outputs
B. To store data
C. To design physical circuits
D. To perform arithmetic operations
Answer: To list all possible input combinations and their corresponding outputs
What does a latch do in digital circuits?
A. Stores a binary state based on input signals
B. Amplifies signals
C. Filters data
D. Converts analog to digital signals
Answer: Stores a binary state based on input signals
Which logic gate is known as the universal gate?
A. NAND gate
B. OR gate
C. AND gate
D. NOR gate
Answer: NAND gate
What is the key difference between combinational and sequential logic circuits?
A. Combinational circuits do not have memory; sequential circuits do.
B. Sequential circuits do not have memory; combinational circuits do.
C. Combinational circuits store data; sequential circuits do not.
D. Sequential circuits use only analog signals.
Answer: Combinational circuits do not have memory; sequential circuits do.
What is the binary equivalent of the hexadecimal number ‘F’?
A. 1111
B. 1010
C. 1100
D. 1001
Answer: 1111
What is the role of a flip-flop in a synchronous circuit?
A. To store and synchronize binary data
B. To filter signals
C. To perform arithmetic operations
D. To convert analog signals
Answer: To store and synchronize binary data
Which digital logic design technique uses ‘SOP’ form?
A. Sum of Products
B. Product of Sums
C. Sum of Differences
D. Difference of Products
Answer: Sum of Products
What is the primary function of an encoder in digital circuits?
A. To convert multiple input lines into a fewer number of output lines
B. To decode binary information
C. To perform arithmetic operations
D. To store data
Answer: To convert multiple input lines into a fewer number of output lines