Parity Generator/Checker

Types of Parity:

1) Even Parity:

• if the number of '1' is even in original signal then it is called even parity.

example:

Original Signal	Parity
a)    0100	1
b)    1100	0

2) Odd Parity:

• if the numbre of '1' is odd in original signal then it is called odd parity.

example:

Original Signal	Parity
a)    0100	0
b)    1100	1

Even Parity Generator:

Message
A	B	C	P(Parity)
0	0	0	0
0	0	1	1
0	1	0	1
0	1	1	0
1	0	0	1
1	0	1	0
1	1	0	0
1	1	1	1

Even Parity Checker:

Received Message
x	y	z	p	C
0	0	0	0	0
0	0	0	1	1
0	0	1	0	1
0	0	1	1	0
0	1	0	0	1
0	1	0	1	0
0	1	1	0	0
0	1	1	1	1
1	0	0	0	1
1	0	0	1	0
1	0	1	0	0
1	0	1	1	1
1	1	0	0	0
1	1	0	1	1
1	1	1	0	1
1	1	1	1	0

Odd Parity Generator:

Message
A	B	C	P(Parity)
0	0	0	1
0	0	1	0
0	1	0	0
0	1	1	1
1	0	0	0
1	0	1	1
1	1	0	1
1	1	1	0

Odd Parity Checker:

Received Message
x	y	z	p	C
0	0	0	0	1
0	0	0	1	0
0	0	1	0	0
0	0	1	1	1
0	1	0	0	0
0	1	0	1	1
0	1	1	0	1
0	1	1	1	0
1	0	0	0	0
1	0	0	1	1
1	0	1	0	1
1	0	1	1	0
1	1	0	0	1
1	1	0	1	0
1	1	1	0	0
1	1	1	1	1