Digital Logic Design MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does a ‘ripple carry adder’ do?
A. Performs binary addition with carry propagation between stages
B. Converts analog signals to digital
C. Stores binary data
D. Amplifies signals
Answer: Performs binary addition with carry propagation between stages
What is the purpose of a ‘digital comparator’?
A. To compare two binary numbers and determine their relative magnitude
B. To store binary data
C. To perform arithmetic operations
D. To convert digital signals to analog
Answer: To compare two binary numbers and determine their relative magnitude
What is the function of an ‘edge-triggered flip-flop’?
A. To change state on the edge of a clock pulse
B. To amplify digital signals
C. To store analog signals
D. To perform addition and subtraction operations
Answer: To change state on the edge of a clock pulse
What does a ‘Johnson counter’ do?
A. Generates a sequence of states in a ring-like fashion
B. Counts binary numbers
C. Amplifies signals
D. Converts analog signals to digital
Answer: Generates a sequence of states in a ring-like fashion
What is a ‘D flip-flop’ used for?
A. To store a single bit of data on the rising or falling edge of a clock signal
B. To perform logical operations
C. To convert digital signals to analog
D. To amplify signals
Answer: To store a single bit of data on the rising or falling edge of a clock signal
What does an ‘RS flip-flop’ do?
A. Stores binary data with set and reset inputs
B. Converts analog signals to digital
C. Amplifies signals
D. Performs arithmetic operations
Answer: Stores binary data with set and reset inputs
What is the main use of a ‘T flip-flop’?
A. To toggle its output on each clock pulse
B. To store multiple bits of data
C. To convert digital signals to analog
D. To perform addition and subtraction operations
Answer: To toggle its output on each clock pulse
What is the primary function of a ‘decoder’ in digital circuits?
A. To convert binary inputs into a one-hot output
B. To amplify digital signals
C. To store binary data
D. To perform arithmetic operations
Answer: To convert binary inputs into a one-hot output
What does a ‘counter IC’ do?
A. Counts events and provides a binary count output
B. Amplifies signals
C. Stores binary data
D. Converts analog signals to digital
Answer: Counts events and provides a binary count output