Digital Logic Design MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does the term ‘digital circuit’ refer to?
A. A circuit that operates using discrete binary values
B. A circuit that operates with continuous signals
C. A type of analog amplifier
D. A physical storage device
Answer: A circuit that operates using discrete binary values
Which type of flip-flop is most commonly used for storing single bits of data?
A. D flip-flop
B. JK flip-flop
C. SR flip-flop
D. T flip-flop
Answer: D flip-flop
What is the significance of ‘latches’ in digital circuits?
A. They store binary data and maintain state
B. They perform logical operations
C. They amplify signals
D. They convert analog signals to digital
Answer: They store binary data and maintain state
What does a ‘buffer’ do in a digital circuit?
A. It isolates and amplifies signals
B. It performs logical operations
C. It stores data
D. It converts digital signals to analog
Answer: It isolates and amplifies signals
What is the purpose of ‘Boolean expression simplification’?
A. To reduce the complexity of digital circuits
B. To increase circuit power consumption
C. To store binary data
D. To convert digital signals to analog
Answer: To reduce the complexity of digital circuits
In digital logic, what is the function of an ‘AND gate’?
A. To output true only when both inputs are true
B. To output true if at least one input is true
C. To invert the input signal
D. To output false if both inputs are false
Answer: To output true only when both inputs are true
What is ‘de Morgan’s Theorem’ used for in digital logic design?
A. To simplify Boolean algebra expressions
B. To convert analog signals to digital
C. To amplify signals
D. To filter noise
Answer: To simplify Boolean algebra expressions
Which logic gate is known for producing an output that is true only if all inputs are true?
A. AND gate
B. OR gate
C. NOT gate
D. NAND gate
Answer: AND gate
What does ‘sequential logic’ rely on for operation?
A. A clock signal
B. Static input levels
C. Analog signals
D. Physical switches
Answer: A clock signal