are more powerful then the first controllers on the market
are relatively low cost compared with the original digital equipment available for industrial control
can be cost effective even when replacing just a few relays
All of the above E. None of the above
Answer is Wrong!
Answer is Right!
The correct answer is: D. All of the above
Programmable controllers (PLCs) are digital computers that are used to control industrial processes. They are more powerful than the first controllers on the market, and they are relatively low cost compared with the original digital equipment available for industrial control. PLCs can be cost effective even when replacing just a few relays.
Here is a brief explanation of each option:
- A. are more powerful then the first controllers on the market
The first PLCs were introduced in the 1970s, and they were relatively simple devices. They could only perform a few basic tasks,
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