Answer the following:

$($a$)$ How many nibbles are $16$ bits?

$($b$)$ How many bytes are $32$ bits?

$($c$)$ If a word is defined as $16$ bits, how many words is a $64-$bit data item?

$($d$)$ What is the exact value $($in decimal$)$ of $1$ meg?

$($e$)$ How many kilobytes is $1$ meg?