3.2 Logic gates and logic circuits

Question 1

Logic gates

Answer 1

electronic circuits which rely on ‘on/off’ logic

the most common ones are NOT, AND, OR, NAND, NOR and XOR

Question 2

Logic circuit

Answer 2

formed from a combination of logic gates and designed to carry out a particular task
the output from a logic circuit will be 0 or 1

Question 3

Truth table

Answer 3

a method of checking the output from a logic circuit

use all the possible binary unit combinations depending on the number of inputs

Question 4

Boolean algebra

Answer 4

a form of algebra linked to logic circuits

based on TRUE and FALSE