Chapter $5$ begins with an advertisement for a computer and follows with an explanation regarding the terminology in the advertisement. Two items that are discussed include the speed of the processor of $2\mathrm{.}5$ GHz and the storage capacity of the SDRAM $($synchronous$,$ dynamic random$-$access memory$)$ of $8$ GB $.$ How would you explain the difference between GHz and $GB$ to someone who asked you to explain those two parts of the advertisement and how the storage capacity of the RAM can increase the performance of the computer?