LowByte = data[0]; HighByte = data[1]; TReading = (HighByte << 8) + LowByte; SignBit = TReading & 0x8000; // test most sig bit if (SignBit) // negative { TReading = (TReading ^ 0xffff) + 1; // 2's comp } Tc_100 = (6 * TReading) + TReading / 4; // multiply by (100 * 0.0625) or 6.25 Whole = Tc_100 / 100; // separate off the whole and fractional portions Fract = Tc_100 % 100; if (SignBit) // If its negative { Serial.print("-"); } Serial.print(Whole); Serial.print("."); if (Fract < 10) { Serial.print("0"); } Serial.print(Fract); Serial.print("\n");