2.6 Boolean Logic

Question 1

Logic diagram

Answer 1

A method of expression of Boolean Logic in a diagrammatic form using a set of standard symbols representing the various Logic Gates such as AND NOT OR NAND etc.

Question 2

Logic gate

Answer 2

An individual symbol used in a logic diagram which represents a single gate e.g. AND, OR, NOT.

Question 2

Logic gate: AND

Answer 2

A logic gate which accepts two inputs and produces one output. Both inputs must be TRUE for the output to be TRUE, otherwise the output is FALSE.

Question 3

Logic gate: OR

Answer 3

A logic gate which accepts two inputs and produces one output. At least one input must be TRUE for the output to be TRUE, otherwise the output is FALSE.

Question 4

Logic gate: NOT

Answer 4

A logic gate which accepts one input and produces one output. If the input is TRUE then the output will be FALSE, otherwise the output will be TRUE.

Question 5

Truth table

Answer 5

A notation used in Boolean algebra for defining the output of a logic gate or logic circuit for all possible combinations of inputs.