Circuits and Logic Gates

Question 1

What are Transistors?

Answer 1

Transistors are the fundamental devices. A transistor
acts, depending on the voltage level of an input
signal, either as a wire that conducts electricity or as
a resistor that blocks the flow of electricity

Question 2

What do Logic Gates do?

Answer 2

A logic gate processes one or more input values to
generate an output value. The values are binary (1, 0)

Question 3

What are the six logic gates called?

Answer 3

AND, OR, NOT, NAND (NOT+AND), NOR(NOT+OR), XOR(EXCLUSIVE OR)

Question 4

What is the purpose of Boolean Algebra?

Answer 4

Boolean Algebra is used to analyse and simplify the digital
logic circuits.

Question 5

Draw a circuit that simulates the following Boolean equations and give a truth table
for each ( is the bar):
a)A .B + A.D
b)A B + AB
c)A +C .A + BD

Question 6

What does a decoder do?

Answer 6

The basic function of a decoder is to detect the presence of a
specified combination of bits on its inputs and indicate that presence by a specified output