... can't use LED connected to RB0 pin and can use LED's connected to RB1 to RB7 pin. So if someone presses key-1 on remote LED connected to RB1 pin glows, similarly on pressing key-2 on remote, LED connected to RB2 pin glows and so on, if someone press key-0 on remote, all LED's connected to PORTB will turn off.
NOTE: There is some problem with my board LED connected to RB5 that's why it doesn't glow when pressing Key-5 on remote, but if you see the video, data is displayed properly on 16x2 LCD.