Q$1.$ Knowing what the Program Counter $($PC$)$ is in the Von Neumann computer hardware architecture; complete the diagram below: CPU RAM $[5$ Marks$]$ N$.$B$.$: Explain how you have arrived at the final answer. Q$2.$ The Central Processing Unit $($CPU$)$ is known as the $$brain$$ of any computing device. From the above assertion, after having learnt about the Fundamentals of Operating Systems; by analogy, one may be tempted to say that the Operating System $($OS$),$ if applicable, is the $$heart$$ of any computing device. What is your comment in ten $(10)$ lines at maximum. $[5$ Marks$]$