Digital Logic Design MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What is the function of a ‘shift register’?
A. To shift data bits in a specific direction
B. To store binary data
C. To perform arithmetic operations
D. To filter signals
Answer: To shift data bits in a specific direction
What does a ‘carry lookahead adder’ do?
A. Reduces the time needed to propagate carry bits in binary addition
B. Stores binary data
C. Converts digital signals to analog
D. Amplifies signals
Answer: Reduces the time needed to propagate carry bits in binary addition
What is a ‘serial adder’?
A. An adder that processes binary numbers one bit at a time
B. A device that stores binary data
C. A converter for analog signals
D. A signal amplifier
Answer: An adder that processes binary numbers one bit at a time
What does a ‘digital filter’ do?
A. Processes digital signals to remove unwanted components
B. Converts analog signals to digital
C. Stores binary data
D. Amplifies signals
Answer: Processes digital signals to remove unwanted components
What is a ‘digital comparator’?
A. A device that compares two binary values and outputs the result
B. A device that converts analog signals to digital
C. A device that stores binary data
D. A signal amplifier
Answer: A device that compares two binary values and outputs the result
What does a ‘data selector’ do?
A. Selects one of several data inputs based on control signals
B. Converts digital signals to analog
C. Stores binary data
D. Performs arithmetic operations
Answer: Selects one of several data inputs based on control signals
What is a ‘digital demultiplexer’ (DEMUX)?
A. A device that takes a single input and distributes it to multiple outputs
B. A device that performs logical operations
C. A device that converts digital signals to analog
D. A device that stores binary data
Answer: A device that takes a single input and distributes it to multiple outputs
What does a ‘flip-flop’ do in digital circuits?
A. Stores a single bit of binary data
B. Performs arithmetic operations
C. Converts analog signals to digital
D. Amplifies signals
Answer: Stores a single bit of binary data
What is a ‘digital multiplexer’ (MUX)?
A. A device that selects one of many inputs and forwards it to a single output
B. A device that converts analog signals to digital
C. A device that stores binary data
D. A signal amplifier
Answer: A device that selects one of many inputs and forwards it to a single output