Chapter 18, Problem 38E

a.

Program Plan Intro

Parity bit:

Parity bit is a simplest form of error detection code.

• A bit added to the end of a string of binary code is called as parity bit. It is otherwise called check bit.
• This parity bit indicates whether the number of bits in the binary code with the value 1 is even or odd.
  • If the binary code contains even number of 1, it is referred to as even parity.
  • If the binary code contains odd number of 1, it is referred to as odd parity.
• There are two types of parity bits:
  • Even parity bit
  • Odd parity bit

Even parity bit:

• Even parity bit is set to 1, if the count of one’s in a given binary code is odd without including the parity bit.
• Otherwise, it is set to 0, if the count of one’s in a given binary code is even.

b.

Explanation of Solution

Find the even parity bit of 8-bit code:

The parity bit for 8-bit binary code 10101010 (Consider the binary code is even parity) is determined by,

• The binary code 10101010 contains 4 one’s and 4 zeroes...

c.

Explanation of Solution

Find the even parity bit of 8-bit code:

The parity bit for 8-bit binary code 11111111 (Consider the binary code is even parity) is determined by,

• The binary code 11111111 contains 8 one’s and no zeroes...

d.

Explanation of Solution

Find the even parity bit of 8-bit code:

The parity bit for 8-bit binary code 00000000 (Consider the binary code is even parity) is determined by,

• The binary code 00000000 contains 8 zeroes and no ones...

e.

Explanation of Solution

Find the even parity bit of 8-bit code:

The parity bit for 8-bit binary code 11101111 (Consider the binary code is even parity) is determined by,

• The binary code 11101111 contains 7 one’s and 1 zero is present...