-Last three digits of my roll number is 072-000001001000(binary).

-When the enable pin is on (1) and the binary entered is correct the seven segment LED shows 072.

-When the enable pin is off(0) LED shows 000 irrespective of the binary is correct or not.

-When the binary is wrong then the digital LED glows and seven segment LED shows 000.

-My roll number in hexadecimal is 48.