The first company to build PLCs was ________.
A) Allen Bradley B) General Motors C) Modicon D) Square D
Question 2
Which of the following statements is correct?
A) The number of ladder logic virtual relays and input and output instructions is limited only by memory size.
B) The number of contacts for a mechanical relay is limited to number of coils on the relay.
C) A ladder logic program is hard to analyze because it is totally different when compared with the equivalent relay logic solution.
D) Ladder logic is a PLC graphical programming technique introduced in the last 10 years.
The nurse can make observations about the patient's general appearance while talking with the p
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