Each row of the following table is to contain an equal value expressed in a different number system. Complete the missing values. Assume each value is $8$ bits and the $2$ subscription binary numbers $($e$.$g$.,{10101010}_2)$ are unsigned and $2c$ subscription binary numbers $($e$.$g$.,{10101010}_{2c})$ are $2\text{'}$s complement.

$\backslash$table$[[$binary$,$octal,hexadecimal,decimal$],[{11101110}_{2C},,,],[,045($unsigned$),,],[,,0$xFC $($signed$),],[{11101110}_2,,,],[,373($signed$),,],[{11001011}_{2c},,,],[,,0$xD$2($unsigned$),],[,,,-111],[,,,82]]$

Show bit$-$by$-$bit operations how the subtraction $(118-29)$ can be done using $(118+(-29).$

Develop a $2-$input OR gate using only NAND gates.

$($Hint: You may use Duality and$/$or De$-$Morgan's Law$)$