Whether you give presentations for a living or attend them only at seminars, you've probably sat through hours of digital slides and scenarios, overhead-projector transparencies and bullet points.

The Epson EX5210 Multimedia Projector ($549.99 direct) is a handsome, portable business projector that’s easy to use and has some nifty features. Its image quality is decent for data, as well as for ...

The Epson PowerLite 420 Multimedia Projector is a short-throw data projector in the same series as the Epson PowerLite 435W Multimedia Projector, but with lower resolution, brightness, and price.

Ernie Smith is a former contributor to BizTech, an old-school blogger who specializes in side projects, and a tech history nut who researches vintage operating systems for fun. Years ago, projectors ...