As I said the first pin of the LCD is connected with ground, the next pin is connected to Vcc, the next pin is connected through this potentiometer.
सांगितल्याप्रमाणे LCD चि पहिली pin ग्राउंड ला जोडल्या जाईल, नंतरची Vcc ला, आणि त्यानंतरची potentiometer द्वारे जोडल्या जाईल.