Computer Knowledge

Digital Logic and Microprocessors

749 Questions

Digital logic and microprocessors form the core of computer science, covering logic gates, combinational and sequential circuits, and CPU architecture. These topics are crucial for computer knowledge sections in technical exams. Test your digital electronics basics here.

Logic gates and circuitsCombinational vs sequential circuitsMicroprocessor instructionsTruth tables and boolean functions

Digital Logic and Microprocessors Questions

Multiple choice

NMOS means

  1. n channel mos

  2. n complement mos

  3. n carrier mos

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NMOS stands for n-channel metal-oxide-semiconductor. It is a type of field-effect transistor where the channel is formed by n-type carriers.

Multiple choice

ECL means

  1. emission coupled logic

  2. emitter cool logic

  3. emitter coupled logic

  4. emission cool logic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ECL stands for Emitter Coupled Logic. It is a high-speed logic family that uses an overdriven bipolar junction transistor differential amplifier.

Multiple choice

A half adder adds _____ bits.

  1. 1

  2. 2

  3. 4

  4. 8
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A half adder is a digital circuit that adds two single-bit binary numbers, producing a sum and a carry.

Multiple choice

A full adder adds ____ bits.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A full adder adds three bits: two significant bits and a carry-in bit from a previous stage.

Multiple choice

The input variable of a half adder is called

  1. augend

  2. multiplicand

  3. dividend

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A half adder takes two single-bit binary inputs, commonly referred to as the augend and the addend. These terms describe the two numbers being added together.

Multiple choice

A flip-flop has _____ outputs.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A standard flip-flop has two outputs, typically denoted as Q and Q-bar (the complement of Q). These outputs are always in opposite states.

Multiple choice

Full adder has _____ inputs.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A full adder is designed to add three bits: two significant bits and a carry-in bit from a previous stage. Thus, it has three inputs.

Multiple choice

In flip-flop, Q is _____ output.

  1. normal

  2. complement

  3. both 1 and 2

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a flip-flop, Q is defined as the normal or primary output, while Q-bar is the complement output.