I've been through the threads here about look up tables, but i've seen a piece of code, interfacing a DS1620 to the 8051, without a lookup table. You can check it out here: http://www.sriram.5gigs.com/DS1620.asm . I'm doing a temperature data telemetry project. Can some one guide me to the right piece of code for interfacing a DS1620 to the 8051? You can mail me at: ponds.2002@gmail.com . Thanks in advance..