$$ Consider a microcontroller with a $16-$bit data bus and a $28-$bit address bus. But now let$$s add a twist to see how many microcontroller memories available today work. Assume each byte $(8$ bits$)$ is individually addressable, which allows us to either read$/$write $8$ bits from an address or $16$bits from two addresses. Note, the ARM Cortex M$0+$ described in Module $3$ is similar to this but actually has $32-$bit data and address busses to access up to $4$ bytes $($from $4$ addresses$)$ at once.