All work must be shown!!! Thank you!!!

8. Consider the following addition problems for 8-bit binary numbers in signed twos complement. Do the sum and express it as eight digits, all the storage space available. For each sum, state:

Sum	Questions	Yes or No
1000 0111 + 1000 0111	Is the sign bit a 1?
	Are the low-order 8 bits all 0?
	Does overflow occur?
1000 0111 + 0111 1111	Is the sign bit a 1?
	Are the low-order 8 bits all 0?
	Does overflow occur?
0111 1100 + 1100 1110	Is the sign bit a 1?
	Are the low-order 8 bits all 0?
	Does overflow occur?
0101 1100 + 1010 0100	Is the sign bit a 1?
	Are the low-order 8 bits all 0?
	Does overflow occur?