Nowadays screen monitor are available for the passenger in the airport, it shows many information, some of it displays about the flight and boarding information. Boarding gate information sometimes available in less then one hours before boarding time:
Boarding Gate Information for the Flight
Big Screen shows "Wait for Gate"
For a big Airport that has so many flight in it, organize the gate is not an easy job, there are so many gate and so many flight, and off course so many passenger and workers that should be managed nicely.....Have a nice flight.........
Direction Sign in the Airport