A "Beamer" is a digital projector, especially as distinct from overhead projectors (which are called "Overhead-Projektor" in German). A "Projektor" is almost a

A "Beamer" is a digital projector, especially as distinct from overhead projectors (which are called "Overhead-Projektor" in German). A "Projektor" is almost always analogue, except for cinemas (where the audience typically can't see the projector directly). It wouldn't be totally unexpected to refer to a "Beamer" as a "Projektor" but it might seem a bit weird or old-fashioned.