User talk:Prateek Kumar Agrawal

Hi Prateek, I undid your changes to File:HalfSubtractor.svg, as your edit didn't quite do what I think you were trying to do. If you wish to upload an image you should use the upload function on the left "Upload file" -- I believe you have to reach "autoconfirmed" status (see free image on wikipedia, in order to satisfy copyright constraints, this is all detailed on Wikipedia:Copyrights. If you have any questions you can reply here or on my "talk" page. User A1 (talk) 11:58, 23 December 2009 (UTC)