$16\mathrm{.}1$ Briefly describe each of the seven types of operating systems as categorized in your textbook.

$16\mathrm{.}2$ Design an LMC program that calculates the Summation of a number provided through the input basket. The Summation of a number n $($denoted as $)$ is the Sum of all positive integers less than or equal to n$.$ For example, the Summation of $5=5+4+3+2+1=15.$ The program should read a single number from the input, calculate its summation and output the result. Assume that the input will always be a positive integer and small enough to ensure the summation result does not exceed the LMC$\text{'}$s maximum value capacity. After outputting the summation result, the program should halt.