Problem $1$: $($a$)$ Given a binary number $1101010,$ convert it to

$($i$)$ Hex $($ii$)$ BCD $($iii$)$ Base $20$

$($b$)$ Given a number in it's two's complement as $101110,$ convert it into

$($i$)$ decimal number $($with sign$)($ii$)$ binary number $($with sign$)$

$($c$)$ Indicate the ASCII representation for the string $2$ Hf with even parity

$($d$)$ Convert the number $-28$ into its $2\text{'}$s complement representation of size $8$ bits