User talk:194.80.180.148

November 2010
We welcome and appreciate your contributions, but your recent edits to Control Systems/Feedback Loops had to be undone. Please see What is Wikibooks? to learn more about what contributions are beneficial to Wikibooks. Your recent edit appears to have added incorrect information and has been reverted or removed. All information in this project should be verifiable in a reliable, published source. If you believe the information that you added was correct, please cite the references or sources or before making the changes, discuss them on the page's talk page. Please use the sandbox for any tests that you wish to make. Do take a look at the welcome page if you would like to learn more about contributing to our project. Thank you. – Adrignola talk 16:43, 9 November 2010 (UTC)