1.) (a) What is the difference between the sign-magnitude and 2's-complement systems of representing signed binary numbers?
(b) What is the advantage of using the 2's-complement system to represent signed numbers?
(c) Describe the procedure for performing subtraction by 2's-complement addition. Give your answer interms of minuend and subtrahend.
2.) Write down 8-bit (a) sign-magnitude, (b) 1's complement, and (c) 2's complement representations for decimal numbers +32 and -32.
3.) Use 2's-complement method to subtract +28 from -67