Four small numbers are stored in memory starting from the address $03$A$.$

Using MU$0$ instruction set architecture and assuming that the sum of these numbers can fit in one memory location $(16$ bit$)$:

$1)$Write an assembly program to sum these four numbers and store the sum at the address $03$E$.$

$2)$Try to find the smallest number of these four numbers assuming what you may need and store it at the address $03$F$.$