Eduardo asked: > Hi; > Does anybody know how to save the calibration data on a 12c58/jw chip? What type of programmer hardware/software are you using? If it's a PICStart Plus, it's dependant on the version of MPLAB you're using. If it's < 3.99 then you will have to go into "Editor" mode and read it using the PSP. If it's 3.99 then you should be able to read it directly from the programmer window. For other programmers, you'll have to contact the manufacturer. Good luck, myke W.E.B. Griffin has scored another big hit with "The Investigators", this week's book at: http://www.myke.com/Book_Room/book1a.htm Also look at: http://www.myke.com/My_Books/homcu.htm for information on "Handbook of Microcontrollers" which has been named the Main Selection for November 1998 for the Electronics Book Club!