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Digital Electronics
NUMBER SYSTEM
BINARY CODES
TYPES OF BINARY CODES
BCD CODE
EFFICIENCY OF BCD
EXCESS-3 CODE
GRAY CODE
M out of N CODING SCHEME with EFFICIENCY
PARITY BIT
ERROR DETECTION by PARITY
QUESTION
HAMMING CODE (General form)
Relation of PARITY BIT with MESSAGE BITS
ILLUSTRATION-I
ILLUSTRATION-II
BOOLEAN ALGEBRA
K MAPS
COMBINATIONAL CKT
SEQUENTIAL CIRCUITS
TIMING CIRCUITS

 

 

Eg. Find out the parity bit (odd) for message 1100

As 1100 has 2 i.e. even number of 1’s so we take parity bit (odd) as 1 to make odd number of 1’s out of 5 bits

So message we send is 11001 (5th is the parity bit)

Eg. Find out the parity bit (even) for message 1100

As we have 2 i.e. even number of 1’s so we take parity bit (even) as 0 so that number of 1’s remain even. Hence the message is 11000 (5th is the parity bit)

Eg. Find out the parity bit (even) for message 1000

As we have 1 i.e. odd number of 1’s so we take parity bit (even) as 1 so that number of 1’s as even. Hence the message is 10001 (5th is the parity bit)

 

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