These are homework questions from my microprocessor class.

1.) Write the expression that computes the one's complement of the symbol XYZ and adds 1.

2.) Write the expression that obtains the least significant hexadecimal digit of the value assigned to the symbol B.

3.) Write the expression that returns the truth value for the variable B greater then or equal to zero and less than 32.

4.) Write the expression that removes the four least Significant bits of the value assigned to the symbol Y.