Dr. Lamb says, "General, a machine becomes human when you can't tell the difference anymore." This summarizes the famous Turing Test, devised by Alan Turing, a founder of modern computer theory.
The video game that D.A.R.Y.L. plays is "Pole Position".
D.A.R.Y.L. stands for Data Analysing Robot Youth Lifeform, as shown on a screen in Dr Stewart's laboratory.
The scenes with all of the computers at the military base were filmed in the backstage computer rooms at Walt Disney World's EPCOT Center.