Go to: http://www.youtube.com/watch?v=VQf_smqzAEA and view the video. Next go to http://www.plcs.net/contents.shtml , read “What is a PLC?” and “PLC History”.
Answer the following questions:
1. What does PLC stand for?
2. What is the definition of a PLC?
3. What are the three steps of PLC Operation?
4. What are the four internal areas of a PLC?
5. Why were PLC’s invented/developed?
6. Name an application of PLC’s that is not industrial.
7. What is the most widely used PLC programming language?
8. What makes a PLC very versatile?
