What is a projector and where can it be widely used?

A projector, also known as a projector, is a device that can project images or videos onto a screen. You can connect with computer, VCD, DVD, BD, game machine and DV through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools and entertainment places. According to different working methods, there are different types such as CRT, LCD and DLP.