Author Question: The PLC was invented by ________. A) Dick Morley B) Bill Gates C) Tod Cunningham D) Bill ... (Read 57 times)

kfurse · **on:** Jul 28, 2018

The PLC was invented by ________.

A) Dick Morley B) Bill Gates C) Tod Cunningham D) Bill Landis

Question 2

Which of the following statements is not correct?

A) PLC input instructions are logical symbols associated with voltage at the input module terminals.
B) The PLC rung output -( )- is a discrete output instruction or bit in memory.
C) Each rung of the ladder logic represents a logical statement executed in software inputs on the right and outputs on the left.
D) Input and output instructions in ladder logic do not directly represent the switches and actuators.