A circuit is to be designed to count number of bits in register A that has value $1.$

$1.$ What are the components of data path? Draw the complete diagram of

data path.

$2.$ Which are the output signals from control unit?

$3.$ Develop an ASM chart for the control unit.

$($This question is for $10$ marks so I want everypart of the question so that I can understand it easily$)$