Which of the following is error detection code used in digital logic?

Correct Answer (Detailed Explanation is Below)

D. More than one of the above

Detailed Explanation

Explanation:

Error detection codes are techniques used in digital communication and digital logic systems to check whether data has been corrupted during transmission or storage.

Let’s look at each option:

1. Hamming Code

• Used for error detection and error correction.

• It can detect up to two-bit errors and correct one-bit error.

• Commonly used in computer memory systems (ECC RAM).

2. Cyclic Redundancy Check (CRC)

• A very powerful error detection technique.

• Data is treated as a binary number and divided by a generator polynomial.

• The remainder is appended to the data before transmission.

• Widely used in networks, Ethernet, and storage devices.

3. Checksum

• A simple error detection method.

• Sender calculates a sum of the data and sends it with the message.

• Receiver recalculates the sum to verify data integrity.

• Used in TCP/IP, UDP, and file transfers