To create user applications as described in this chapter, systems analysts often use macros. Learn more about macros by using the Help feature in Microsoft Word, and suggest three tasks that might be performed by macros.

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)