Digital Logic Design MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does ‘frequency divider’ mean in digital circuits?
A. A circuit that divides the input frequency by a specific factor
B. A device that amplifies signals
C. A type of memory storage
D. A circuit that performs logical operations
Answer: A circuit that divides the input frequency by a specific factor
What is the main function of a ‘latch’ in digital logic design?
A. To store binary data and hold it until it is changed
B. To perform arithmetic operations
C. To amplify signals
D. To convert analog signals to digital
Answer: To store binary data and hold it until it is changed
What is the purpose of a ‘buffer’ in digital circuits?
A. To isolate different parts of a circuit and strengthen the signal
B. To perform arithmetic operations
C. To convert digital signals to analog
D. To store data
Answer: To isolate different parts of a circuit and strengthen the signal
What does a ‘binary counter’ do?
A. Counts binary numbers and provides a sequence of counts
B. Stores binary data
C. Performs arithmetic operations
D. Converts analog signals to digital
Answer: Counts binary numbers and provides a sequence of counts
What is the difference between ‘AND gate’ and ‘OR gate’?
A. An AND gate outputs true only if all inputs are true, while an OR gate outputs true if at least one input is true
B. An AND gate stores data, while an OR gate amplifies signals
C. An AND gate converts digital signals, while an OR gate converts analog signals
D. An AND gate performs subtraction, while an OR gate performs addition
Answer: An AND gate outputs true only if all inputs are true, while an OR gate outputs true if at least one input is true
What does a ‘synchronous reset’ do in digital circuits?
A. Resets the circuit in sync with the clock signal
B. Resets the circuit asynchronously with respect to the clock
C. Amplifies digital signals
D. Stores data
Answer: Resets the circuit in sync with the clock signal
What is a ‘combinational circuit’?
A. A circuit whose output is determined solely by the current inputs
B. A circuit that stores data
C. A circuit with feedback loops
D. A device for amplifying signals
Answer: A circuit whose output is determined solely by the current inputs
What is the purpose of a ‘MUX’ (Multiplexer)?
A. To select one of many inputs and forward it to a single output
B. To store binary data
C. To perform logical operations
D. To convert analog signals
Answer: To select one of many inputs and forward it to a single output
What does a ‘Bistable Multivibrator’ do?
A. Generates two stable states, used for storing binary data
B. Amplifies digital signals
C. Converts analog signals to digital
D. Performs arithmetic operations
Answer: Generates two stable states, used for storing binary data