Managing many projectors is a lot of work We want to minimize total cost of ownership (TCO) Replacing lamps in a ceiling-mounted projector is cumbersome I want to complete our projector installation and replacement with minimal effort Periodic filter maintenance is bothersome Emergency calls from professors about a sudden lamp burnout is
a serious concern I want a projector that can be turned off immediately after use I need to offer the school with an ecological solution that saves energy
and reduces costs More and more professors and students are using PCs