Question $(1)$ The hypothetical machine of Figure $3\mathrm{.}4$ also has two I$/$O instructions:

$0011=$ Load $AC$ from $\frac{\text{I}}{O}$

$0111=$ Store $AC$ to $\frac{\text{I}}{O}$

In these cases, the $12-$bit address identifies a particular $\frac{\text{I}}{O}$ device. Show the program execution

$($using the format of Figure $3\mathrm{.}5)$ for the following program:

Load AC from device $5.$

Add contents of memory location $940.$

Store $AC$ to device $6.$

Assume that the next value retrieved from device $5$ is $3$ and that location $940$ contains a value of

Memory $($contents in hex$)$: $300$: $3005$; $301$: $5940$; $302$: $7006$

Step $1$: $3005-$ IR;

Step $2$: $3-AC$

Step $3$: $5940-IR$;

Step $4$: $3+2=5$longrightarrowAC

Step $5$: $7006-IR$;

Step $6$: AC longrightarrow Device $6$

please explain the solution