Digital Electronics Quiz

Which type of gate will have a HIGH output if both inputs are LOW?

• AND gate

• OR gate

• NOR gate

• XOR gate

In digital electronics, a flip-flop is mainly used to:

• Amplify signals

• Store a single binary bit

• Perform arithmetic operations

• Filter analog signals

The output of an OR gate is LOW only when:

• Both inputs are HIGH

• At least one input is HIGH

• Both inputs are LOW

• The inputs are different

What is the primary application of a Schmitt Trigger?

• Analog-to-digital conversion

• Signal filtering

• Wave shaping with hysteresis

• Frequency multiplication

Which logic gate is considered a "universal gate" because it can be used to create any other logic gate?

• AND gate

• OR gate

• NOR gate

• XOR gate

In a digital circuit, the propagation delay is defined as:

• The time it takes to reset a circuit

• The time it takes for a signal to propagate through a gate

• The time it takes to convert analog to digital

• The duration of an input pulse

An operational amplifier with an inverting configuration produces an output that is:

• In phase with the input

• Out of phase with the input

• Unaffected by the input

• Always positive

The function of a 555 timer in astable mode is to:

• Generate a fixed DC voltage

• Act as a flip-flop

• Produce a continuous square wave output

• Generate a sine wave

What is the primary characteristic of an ideal operational amplifier's input impedance?

• Very low

• Equal to output impedance

• Infinite

• Zero

The output of an XOR gate is HIGH only when:

• Both inputs are HIGH

• Both inputs are LOW

• Both inputs are the same

• The inputs are different