Automatic dialer circuit using At89s52 by Arun Bera | Projects › Projects › Automatic dialer circuit using At89s52 by Arun Bera This topic has 0 replies, 1 voice, and was last updated 11 years, 10 months ago by query. Viewing 1 post (of 1 total) Author Posts July 11, 2011 at 6:17 am #1076 queryParticipant I want to build an automatic dialer circuit using At89s52.Plzz help me ……[email protected] Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In