difference PAC ,PLC and DCS

[hiroT]

I dont understand the difference PLC, PAC, DCS.
PLC is programable logic controller.
PAC is programable automation controller.
DCS is distributed control system.
What is difference?
What is the typical model each category?

[sthompson]

http://lmgtfy.com/?q=PAC%2C+PLC%2C+DCS

[Paul B]

What's cool is this thread is the second hit on Google. :)

[sthompson]

What's cool is this thread is the second hit on Google. :)

That is cool! It wasn't when I posted it, but obviously the activity on this site keeps it high on Googles score system.

Stu...