Projectors have come a long way over the past 20 or 30 years. After spending the first decade of my teaching career using overhead projectors, I do not miss having my fingers covered in red, green, ...

For the teachers and other professionals in the audience who use overhead projectors regularly, the AVerVision 150 Portable Document Camera could save you some much needed time. Or not. Equipped with ...

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 ...