Answer:
There needs to be an odd number of 1 bits
Explanation:
Parity is the bit that is used for the purpose of checking data, whether the data is correct or not. In parity check, a bit (1 or 0) has been added with the data byte. 1 will be added if the number of 1 in a byte of data are odd else add zero. After processing the data will retrieved from the memory and checked with the help of that parity bit that whether the data is correct or corrupted.
If the parity bit of the sent data and retrieved data is same, it means the data is correct otherwise it is considered to be corrupted. So, In case of RAM when data is retrieved for the purpose of calculation, a parity bit is added with the data as per above mentioned rule.
