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

The NOT gate has _____ input(s).

  1. 0

  2. 1

  3. 2

  4. 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A NOT gate performs logical negation on a single input variable, meaning it has exactly one input.

Multiple choice

The NAND and NOR gates are called

  1. basic logic gates

  2. universal logic gates

  3. both (1) and (2)

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

NAND and NOR gates are called the universal logic gates.

Multiple choice

The NOT, OR and AND gates are called

  1. basic logic gates

  2. universal logic gates

  3. both (1) and (2)

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

The NOT, OR and AND gates are called basic logic gates.

Multiple choice

In Positive logic, logic state 1 corresponds to

  1. positive voltage.

  2. higher voltage.

  3. zero voltage.

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

In positive logic, the higher voltage level is assigned the value of 1, and the lower voltage level is assigned the value of 0.

Multiple choice

Arithmetic operations are coded in

  1. Decision symbols

  2. I/O

  3. Processing symbols

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

In flowcharts, arithmetic operations and data manipulations are represented by rectangular processing symbols.

Multiple choice

An AND gate can be imagined as

  1. Switches connected in series

  2. Switches connected in parallel

  3. MOS transistors in series

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An AND gate requires all inputs to be 1 to produce a 1 output, which is logically equivalent to switches connected in series where current only flows if all switches are closed.