Processor is a 18F23K20 I've never had the requirement to do much math with a PIC, other than simple divide by 2 or 4 (shifts), add and subtract So looking for a little help in implementing this temp_F = (temp_C * 9 / 5) + 32; The temp_C * 9 can be done with the MULLW instruction. Just not to sure about the divide by 5 part? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist