Q. What is the primary function of a binary to decimal converter?
-
A.
To convert decimal numbers to binary
-
B.
To convert binary numbers to decimal
-
C.
To convert hexadecimal numbers to binary
-
D.
To convert binary numbers to octal
Solution
A binary to decimal converter takes a binary number and converts it into its decimal equivalent.
Correct Answer:
B
— To convert binary numbers to decimal
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Q. What is the primary function of a bistable multivibrator?
-
A.
To generate a continuous waveform
-
B.
To store a binary state
-
C.
To convert analog signals to digital
-
D.
To amplify signals
Solution
A bistable multivibrator has two stable states and can store a binary state (0 or 1) until it is triggered to change states.
Correct Answer:
B
— To store a binary state
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Q. What is the primary function of a buffer in digital circuits?
-
A.
To increase signal strength
-
B.
To decrease signal strength
-
C.
To perform logic operations
-
D.
To store data
Solution
A buffer is used to increase the strength of a signal, allowing it to drive larger loads.
Correct Answer:
A
— To increase signal strength
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Q. What is the primary function of a counter in digital electronics?
-
A.
To store data
-
B.
To count events
-
C.
To perform arithmetic operations
-
D.
To convert signals
Solution
A counter is primarily used to count the number of occurrences of an event.
Correct Answer:
B
— To count events
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Q. What is the primary function of a decoder in combinational logic?
-
A.
To perform arithmetic operations
-
B.
To convert binary data to decimal
-
C.
To select one output from multiple inputs
-
D.
To convert binary inputs to a unique output line
Solution
A decoder converts binary inputs into a unique output line, activating one output for each input combination.
Correct Answer:
D
— To convert binary inputs to a unique output line
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Q. What is the primary function of a decoder in digital circuits?
-
A.
To convert binary data to decimal
-
B.
To select one output line based on the binary input
-
C.
To perform arithmetic operations
-
D.
To store data
Solution
A decoder converts binary input into a unique output line, effectively selecting one of many outputs.
Correct Answer:
B
— To select one output line based on the binary input
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Q. What is the primary function of a decoder in MSI logic circuits?
-
A.
To perform arithmetic operations
-
B.
To convert binary data to decimal
-
C.
To select one of many inputs
-
D.
To convert binary inputs to a specific output
Solution
A decoder converts binary inputs into a specific output, activating one output line for each unique input combination.
Correct Answer:
D
— To convert binary inputs to a specific output
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Q. What is the primary function of a digital-to-analog converter (DAC)?
-
A.
To sample an analog signal
-
B.
To convert digital signals into analog signals
-
C.
To filter digital signals
-
D.
To amplify analog signals
Solution
A DAC converts digital signals back into analog signals, allowing digital data to be represented in a form that can be used by analog devices.
Correct Answer:
B
— To convert digital signals into analog signals
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Q. What is the primary function of a flip-flop in digital circuits?
-
A.
To amplify signals
-
B.
To store binary data
-
C.
To perform arithmetic operations
-
D.
To convert analog signals to digital
Solution
A flip-flop is a bistable device that can store one bit of binary data, making it essential for memory storage in digital circuits.
Correct Answer:
B
— To store binary data
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Q. What is the primary function of a flip-flop in digital design?
-
A.
To perform arithmetic operations
-
B.
To store binary data
-
C.
To generate clock signals
-
D.
To convert analog signals to digital
Solution
A flip-flop is a basic memory element in digital circuits that can store one bit of binary data.
Correct Answer:
B
— To store binary data
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Q. What is the primary function of a flip-flop in digital electronics?
-
A.
Data storage
-
B.
Data transmission
-
C.
Data conversion
-
D.
Data processing
Solution
The primary function of a flip-flop is data storage.
Correct Answer:
A
— Data storage
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Q. What is the primary function of a microprocessor?
-
A.
To store data permanently
-
B.
To perform arithmetic and logic operations
-
C.
To manage input and output devices
-
D.
To provide power to the system
Solution
The primary function of a microprocessor is to perform arithmetic and logic operations, which are essential for executing instructions.
Correct Answer:
B
— To perform arithmetic and logic operations
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Q. What is the primary function of a multiplexer?
-
A.
To perform arithmetic operations
-
B.
To select one of many inputs
-
C.
To store data
-
D.
To amplify signals
Solution
A multiplexer selects one of many input signals and forwards the selected input to a single output line.
Correct Answer:
B
— To select one of many inputs
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Q. What is the primary function of a shift register?
-
A.
To store data temporarily
-
B.
To perform arithmetic operations
-
C.
To convert analog signals to digital
-
D.
To amplify signals
Solution
A shift register is primarily used to store data temporarily and shift it in or out serially.
Correct Answer:
A
— To store data temporarily
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Q. What is the primary function of a switch in an electrical circuit?
-
A.
To increase voltage
-
B.
To control the flow of current
-
C.
To store energy
-
D.
To convert AC to DC
Solution
A switch is used to control the flow of current in a circuit by opening or closing the circuit.
Correct Answer:
B
— To control the flow of current
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Q. What is the primary function of a transistor in an integrated circuit?
-
A.
To store data
-
B.
To amplify signals
-
C.
To provide power
-
D.
To connect components
Solution
Transistors are used in integrated circuits primarily to amplify signals, acting as switches or signal modulators.
Correct Answer:
B
— To amplify signals
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Q. What is the primary function of an analog-to-digital converter (ADC)?
-
A.
To convert digital signals to analog signals
-
B.
To amplify analog signals
-
C.
To convert analog signals to digital signals
-
D.
To filter analog signals
Solution
An ADC converts analog signals, which are continuous in nature, into digital signals, which are discrete.
Correct Answer:
C
— To convert analog signals to digital signals
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Q. What is the primary function of an Ex-NOR gate?
-
A.
To perform addition
-
B.
To compare two binary values for equality
-
C.
To invert a signal
-
D.
To perform logical AND operation
Solution
The primary function of an Ex-NOR gate is to compare two binary values and output true (1) if they are equal.
Correct Answer:
B
— To compare two binary values for equality
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Q. What is the primary function of an XOR gate?
-
A.
Outputs true if inputs are the same
-
B.
Outputs true if inputs are different
-
C.
Inverts the input
-
D.
Combines inputs
Solution
An XOR gate outputs true (1) if the inputs are different.
Correct Answer:
B
— Outputs true if inputs are different
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Q. What is the primary function of RAM in a computer system?
-
A.
To store data permanently
-
B.
To provide temporary storage for data in use
-
C.
To manage input and output devices
-
D.
To execute instructions
Solution
RAM (Random Access Memory) provides temporary storage for data that is actively being used or processed by the CPU.
Correct Answer:
B
— To provide temporary storage for data in use
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Q. What is the primary function of the CPU in a computer?
-
A.
To store data permanently
-
B.
To execute instructions
-
C.
To manage input and output devices
-
D.
To provide power to the computer
Solution
The CPU (Central Processing Unit) is responsible for executing instructions and processing data in a computer.
Correct Answer:
B
— To execute instructions
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Q. What is the primary purpose of a digital filter?
-
A.
To amplify signals
-
B.
To remove unwanted frequencies
-
C.
To convert analog signals to digital
-
D.
To sample signals
Solution
Digital filters are designed to remove unwanted frequencies from a signal, allowing only the desired frequencies to pass through.
Correct Answer:
B
— To remove unwanted frequencies
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Q. What is the primary purpose of a flip-flop in digital design?
-
A.
To perform arithmetic operations
-
B.
To store binary data
-
C.
To generate clock signals
-
D.
To convert analog signals to digital
Solution
A flip-flop is a basic memory element in digital circuits that can store one bit of binary data.
Correct Answer:
B
— To store binary data
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Q. What is the primary purpose of simulation in HDL design?
-
A.
To create physical hardware
-
B.
To verify design functionality
-
C.
To optimize power consumption
-
D.
To reduce code size
Solution
Simulation is primarily used to verify the functionality of the design before it is implemented in hardware.
Correct Answer:
B
— To verify design functionality
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Q. What is the primary reason for using BiCMOS technology?
-
A.
Low cost
-
B.
High speed and low power
-
C.
Simplicity
-
D.
High power consumption
Solution
BiCMOS combines the advantages of both bipolar and CMOS technologies, offering high speed and low power consumption.
Correct Answer:
B
— High speed and low power
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Q. What is the primary use of a PLD in digital circuits?
-
A.
To store data
-
B.
To perform arithmetic operations
-
C.
To implement combinational and sequential logic
-
D.
To generate clock signals
Solution
The primary use of a PLD in digital circuits is to implement combinational and sequential logic, allowing for custom logic designs.
Correct Answer:
C
— To implement combinational and sequential logic
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Q. What is the primary use of a ring counter?
-
A.
To count pulses
-
B.
To generate specific sequences
-
C.
To store data
-
D.
To perform calculations
Solution
A ring counter is primarily used to generate specific sequences of outputs.
Correct Answer:
B
— To generate specific sequences
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Q. What is the primary use of a shift register in digital design?
-
A.
To perform arithmetic operations
-
B.
To store and shift data
-
C.
To generate clock signals
-
D.
To amplify signals
Solution
A shift register is used to store data and shift it in or out serially, one bit at a time.
Correct Answer:
B
— To store and shift data
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Q. What is the primary use of flip-flops in digital systems?
-
A.
Data transmission
-
B.
Data storage
-
C.
Signal amplification
-
D.
Analog processing
Solution
Flip-flops are primarily used for data storage in digital systems, holding binary information.
Correct Answer:
B
— Data storage
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Q. What is the purpose of a clock signal in digital circuits?
-
A.
To power the circuit
-
B.
To synchronize operations
-
C.
To reduce noise
-
D.
To increase speed
Solution
The clock signal is used to synchronize operations in digital circuits, ensuring that all components operate in a coordinated manner.
Correct Answer:
B
— To synchronize operations
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