Digital Electronics MCQs

A digital computer works on which number system?

• Decimal

• Binary

• Octal

• Hexadecimal

Which of the following is NOT a characteristic of digital systems?

• Discrete values

• Noise immunity

• Continuous variation

• Logic operation support

Which is the heart of the digital computer?

• Input Unit

• Output Unit

• Central Processing Unit (CPU)

• Memory

Digital systems process information in the form of

• Continuous signals

• Discrete signals

• Sinusoidal signals

• Noise signals

Which of the following is an example of a digital system?

• Thermometer

• Calculator

• Loudspeaker

• Microphone

The smallest unit of data in a digital computer is

• Byte

• Bit

• Word

• Nibble

Which signal has continuous variation with respect to time?

• Digital

• Analog

• Discrete

• Pulse

Digital signals are represented using

• Continuous values

• Logic levels

• Frequency

• Amplitude

Which is less affected by noise?

• Analog signal

• Digital signal

• Both equally

• None

In analog signals, information is represented by:

• Discrete values

• Continuous values

• Binary codes

• Logic levels