The marines attempt to repel the aliens using automatic sentry guns controlled by Grid Compass 1139s.
This is supposed to be the far distant future!
This scene is only in the Special Edition.
Year of feature (shown above)
<blockquote>This is supposed to be the far distant future!</blockquote>
At least they used a computer that fit the design aesthetic of the movie, and also, at least the screen looks like the real Grid Compass used to instead of a crappy chromakey effect showing a fake screen
i find this example to be one of the most realistic use ever.
As with most of James Cameron's films, the sense of realism and it-could-be-like-so feel, Aliens felt very real, even to date. Btw, I believe it wasn't that far ahead in time.