3.1.5 Variable Functions

Describe how you might modify the Plus command so that it can reset a variable block to 0 within a program.
           -change the (+) to a (-) so that it removes 1 on each loop

What might an industrial or manufacturing engineering need to count or keep track of? Describe one example.
           -what floor an elevator is on, a counting machine, or even a digital clock. They all need to add one over and over until the variable is equal to the desired number.
A Variable-Based System: