4. Convert the following unsigned decimal to unsigned binary. 66.625

5. Convert the following signed decimal number, -68, to signed binary form using eight bits and using the signed binary representation of Signed-Magnitude. -68

6. Convert the following signed decimal number, -68, to signed binary form using eight bits and using the signed binary representation of One's Compliment. -68

7. Convert the following signed decimal number, -68, to signed binary form using eight bits and using the signed binary representation of Two's Compliment. -68