2. What decimal value does the S-bit binary number 10110100 have if a. It is interpreted as an unsigned number? b. It is on a computer using signed-magnitude representation? c. It is on a computer using one's complement representation? d. It is on a computer using two's complement representation? 3. Subtract the following signed binary numbers using two's complement by adding the negative of the number being subtracted: 01011011 4. The binary string 00111010000000 is a floating point number expressed using the 14-b simple model given in the lecture slides. (There are no implied bits.) What is its decirm equivalent? (SHOW HOW YOUARRIVE AT THE