Question $1$

Practice exercises do not score in the final grade. Therefore, you can freely discuss them in the Forum without worrying about whether you are transgressing the Honor Code.

The pseudocode shown in figure $1$ functionally describes the chronometer introduced in lesson $1\mathrm{.}1.$The update procedure updates the values of h$,$ m$,$ s and t whenever a clock pulse arrives $($ref$\_$positive$\_$edge signal$).$

Does the pseudocode shown in figure $2$ correctly implement the update procedure?

Figure$1$ loop

if reset$=$ON then h $<=0$; m $<=0$; s $<=0$; t $<=0$;

else if start$=$ON then

while stop$=$OFF loop

if ref$\_$positive$\_$edge$=$TRUE then update$($h$,$m$,$s$,$t$)$;

end if;

end loop;

end if;

end loop; Figure $2$: update procedure if t $=9$ then t $<=0$; add$\_$one$\_$second $<=1$;

else t $<=$ t$+1$; add$\_$one$\_$second $<=0$;

end if;

s $<=$ s $+$ add$\_$one$\_$second;

if s $=60$ then s $<=0$; add$\_$one$\_$minute $<=1$;

else add$\_$one$\_$minute $<=0$;

end if;

m $<=$ m $+$ add$\_$one$\_$minute;

if m $=60$ then m $<=0$; add$\_$one$\_$hour $<=1$;

else add$\_$one$\_$hour $<=0$;

end if;

h $<=$ h $+$ add$\_$one$\_$hour;

if h $=24$ then h $<=0$;

end if; yES

NO; the condition in line $1$ should be t$=10$ instead of t$=9.$

NO; the condition in line $5$ should be s$=59$ instead of s$=60.$

NO$,$ there are other failures different of the two previous ones