$1-$ For the given measurement algorithm with DAQ configuration below.

a$)$ Write the values of A$,$ B$,$ C$,$ and D after $4$ iterations when measured pulse with the period of $0\mathrm{.}1$ s is applied. $(15$ points$)$

b$)$ In order to measure revolution per minute $($RPM$)$ using a $360$ PPR encoder, Write the formula using an appropriate value in the algorithm $($e$.$g$,$ rpm $\backslash (=360\backslash$mathrm$\{$~B$\}/60\backslash )).(15$ points$)$