Part A$.$ Two's Complement Arithmetic $[45$ marks$]$

Perform the following arithmetic operation in binary using signed$-2\text{'}$s complement representation for negative numbers. Convert each decimal number to an equivalent $8-$bit binary number $($show your steps$).$ Indicate the value of the binary number following the arithmetic operation.

i$.\backslash ((+43)\_\{10\}+(-17)\_\{10\}\backslash )$

i$.$ Draw a simple block diagram f an $8-$bit adder$/$subtracter $($using only Full adders and logic gates$)$ to perform addition and subtraction for two's complement number representation.