Error Checking

The value of an odd parity bit

• makes the total number of 1 bits odd
• makes the total number of bits odd
• makes the total number of 1 bits even
• makes the total number of bits even

The purpose of a parity bit is to

• to detect when single-bit errors occur
• ensure that each group has the same number of bits
• provide data redundancy to prevent errors
• separate groups of data bits

Even Parity

• Number of 1s in the code are counted. If there are an odd numbers of 1s the parity bit is set to one to make the total number of 1s even.

• Number of 1s in the code are counted. If there are an even number of 1s the parity is set to one to make the total number of 1s odd.

Odd Parity

• Number of 1s in the code are counted. If there are an odd numbers of 1s the parity bit is set to one to make the total number of 1s even.

• Number of 1s in the code are counted. If there are an even number of 1s the parity is set to one to make the total number of 1s odd.

What is a check digit?

• A method of checking for errors by producing the same data several times and checking it is the same each time.

• a digit added to the end of binary data to check the data is accurate.

• a method of checking binary codes by counting number of 0s and 1s in the code.

• A standard binary coding system that has superseded ASCIII

What is Parity Bit?

• A method of checking for errors by producing the same data several times and checking it is the same each time.

• a digit added to the end of binary data to check the data is accurate.

• a method of checking binary codes by counting number of 0s and 1s in the code.

• A standard binary coding system that has superseded ASCIII

USB stands for:

• Universal Serial Bus
• Unified Serial Bus
• Unique Serial Bus
• Unqualified Students Busk

Half Duplex transmission is where:

• Data can only be transmitted in one direction
• Data can be transmitted in one direction at a time
• Data can be sent both ways at the same time
• A made up term to confuse us

Full Duplex transmission is where:

• Data can only be transmitted in one direction
• Data can be transmitted in one direction at a time
• Data can be sent both ways at the same time
• A made up term to confuse us

Simplex transmission is where:

• Data can only be transmitted in one direction
• Data can be transmitted in one direction at a time
• Data can be sent both ways at the same time
• A made up term to confuse us