BotronikS - Final code for all types of Arduino and PC users: -- HOME -- email: botronik@gmail.com
What you need to install or have installed before on your PC: see HERE

LCDP2A: Show 2x Temperature on LCD display (DS18B20)
LCD1=LCD1602 IIC (Default Address: 0x27, 0x3F) --- S1+S2=DS18B20
Upload HEX code in Arduino-m328: Here3F