What is a controller?
A. A person who manages a process or product
B. A device that manages a process or product
C. A software program that manages a process or product
D. A sensor that measures a process variable
Answer:B
What is a controller?
A. A person who manages a process or product B. A device that manages a process or product C. A software program that manages a process or product D. A sensor that measures a process variable