Thank you all for replying. My friend is an electrical engineer, but he didn't have any hands on or on site experience in PLC before. Instead, he worked for a design institute in China and works as a autocad drafter here. And for me, I'm
working in a bio-lab now, 31K/year. Do you think I should learn SAS to get a better job while I know nothing about math and statistics?
Ｈelp! Any information on PLC or SAS?