The Computer where they type in the waypoints and all the route information is called "ECAM" which stands for Electronic Crew Alert and Monitoring Sytem...that computer allows the crew to talk to the A/C...And type in all the information the plane (and crew) needs to find their way to their destination
Vuelo777 is wrong. The system the nav data is in or inputted into is the Flight Management System (FMS)
ECAM (Airbus Terminology) is, as it's full name describes, integrated computer systems that monitor the a/c systems (Engines, Air Conditioning, Pneumatics etc) and alert the crew if there is a problem.
The Boeing Sytem is EICAS - Engine Indication & Crew Alerting System