Exploring Digital Electronics Concepts

What is the function of an AND gate?

• The function of an AND gate is to output true when at least one input is true.

• The function of an AND gate is to output false only when all inputs are false.

• The function of an AND gate is to output true regardless of the input values.

• The function of an AND gate is to output true only when all inputs are true.

How many inputs can a NAND gate have?

• Two or more inputs

• One input

• Three inputs

• Only digital inputs

What is the output of an OR gate when both inputs are low?

• 1

• 3

• 2

• 0

Define a flip-flop in digital electronics.

• A flip-flop is a bistable device that stores one bit of data.

• A flip-flop is a device that converts analog signals to digital signals.

• A flip-flop is a type of resistor used in circuits.

• A flip-flop is a single stable device that stores multiple bits of data.

What is the primary use of a D flip-flop?

• To transmit data between devices.

• To generate clock signals.

• To store a single bit of data.

• To perform arithmetic operations.

Explain the difference between synchronous and asynchronous flip-flops.

• Asynchronous flip-flops only operate with a single clock signal, whereas synchronous flip-flops require multiple signals.

• Synchronous flip-flops change state immediately based on input changes, while asynchronous flip-flops are clock-driven.

• Synchronous flip-flops are clock-driven and change state at clock edges, while asynchronous flip-flops change state immediately based on input changes.

• Synchronous flip-flops are used in analog circuits, while asynchronous flip-flops are used in digital circuits.

What is a multiplexer and its purpose?

• A multiplexer is a device that amplifies signals for better transmission.

• A multiplexer is a type of memory storage device.

• A multiplexer is a device that selects one of many input signals and forwards it to a single output.

• A multiplexer is used to convert analog signals into digital signals.

How many select lines are needed for a 4-to-1 multiplexer?

• 1

• 4

• 2

• 3

What is the function of an encoder in digital circuits?

• To store data in a non-volatile memory.

• To amplify input signals for better transmission.

• To convert input signals into a binary code representation.

• To filter out noise from the input signals.

Describe the process of analog to digital conversion.

• Analog signals are directly converted to binary without any steps.

• The conversion process is limited to filtering the signal.

• The process of analog to digital conversion includes sampling, quantizing, and encoding.

• The process involves only encoding the signal.