The 7-bit ASCII code for the character ‘T’ is: 1010100

Question

The 7-bit ASCII code for the character ‘T’ is:

1010100

An even parity check bit is now appended to the end of the code so 8 bits are transmitted. What will be the transmitted code for the ASCII character ‘T’?

If even parity check bits are used, which of the following 8-bit received ASCII codes are invalid?

1. i.10001110
2. ii.11011111
3. iii.01110110
4. iv.11011011

Answer 1

Going by the number of 1-bits, i and iv should be invalid