While we are on the subject of memory I saw a new serial eeprom in the May issue of Electronic Design.(shows how far back I am on my required reading). This chip is called the FRAM Here are the specs 10 billion yes 10 billion cycles and now for the interesting part write time = 0 yes, no delay. I believe that the truth in advertisement law has been passed, so if any of you have tried this chip or heard of it let me know. Their number is 719-481-7012 Ramtron is the companys name. I have read that some eeproms are not compatible with PICS (Parallax Application note #11 ) Why is this? Joseph D. West Electronics Lab. Supervisor College of Mechanical Eng. Ohio State University (614) 292-2845 Fax (614) 292-3163