The decimal value of 0xFF is 255. This hexadecimal value, represented as 0xFF, can be converted to decimal by considering the positional value of each digit. In hexadecimal, each digit represents a power of 16. The rightmost digit has a positional value of 16^0, the second rightmost digit has a positional value of 16^1, and so on.
In this case, the rightmost digit is F, which represents the decimal value 15. The second rightmost digit is also F, again representing 15. Therefore, the decimal value of 0xFF can be calculated by multiplying the positional values of each digit with their respective decimal values and summing them up.
The calculation would be as follows:
(15 * 16^1) + (15 * 16^0) = (15 * 16) + (15 * 1) = 240 + 15 = 255
Hence, the decimal value of 0xFF is indeed 255.