Logic Gates Topic 3

Question 1

Logic Gates

Answer 1

A basic building block of digital systems which are found in most digital devices.
Each gate has its own logic symbol which allows complex functions to be represented as diagrams

Question 2

Types of Logic Gates

Answer 2

Combinatorial logic - perform arithmetic, compare values for decision making
Sequential logic - depend on the results from previous operation
Boolean algebra - basis for computer design with 1 (TRUE) 0 (FALSE)

Question 3

NOT Gate

Answer 3

Changes one logic to the opposite from 1 to 0 or 0 to 1
0 1
1 0

Question 4

OR Gate

Answer 4

Can have two or more inputs which determine the number of possible outputs.
IT IS BASICALLY ADDITION
It shapes like a kite

Question 5

AND Gate

Answer 5

IT IS BASICALLY MULTIPLICATION
Shapes like a “D” shape

Question 6

NOR Gate

Answer 6

Negation of an OR gate, the results from OR gate will have to be the opposite to get NOR gate
SHAPES LIKE KITE WITH A DOT INFRONT

Question 7

NAND Gate

Answer 7

Negation of an AND gate, opposite of the results will show a NAND gate
SHAPES LIKE A “D” WITH A DOT INFRONT

Question 8

Exclusive NOR Gate (EX-NOR)

Answer 8

ITS LIKE BATTERY BUT BACKWARDS, OPPOSITE OF EXCLUSIVE OR
IT SHAPES LIKE KITE WITH DOT AND A CURVY LINE FROM THE BACK

Question 9

Exclusive OR Gate (EX-OR)

Answer 9

ITS EXACTLY LIKE BATTERY WHERE TWO OF INPUTS SHOWS POSITIVE IF ITS DIFFERENT ITS NEGATIVE
SHAPES LIKE A “D” WITH CURVY LINE FROM THE BACK