User talk:Roboter27

September 2014
Hello, I'm Donner60. I wanted to let you know that I undid one of your recent contributions, such as the one you made with this edit to Electronic engineering, because it didn’t appear constructive to me. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Donner60 (talk) 20:12, 19 September 2014 (UTC)