There are two memory chips M$1$ and M$2$ as shown in figure below,

containing $4$ registers each. What is the minimum number of address

lines needed to address these registers? Show how you will connect

and address these chips. You can use the following inputs to the

chips: Address lines A$0,$ A$1,$ A$2$ etc.; Chip SelectCS ; Read enableRD ;

and Write enableWR $.$ Show at least two different ways of connecting

them