Difference between smart blackboard and traditional projector

The biggest difference between a smart blackboard and a projector is that a smart blackboard has an operating system, while a projector does not. Currently on the market most of the smart blackboard, the use of DLP projection technology, with the LED light source, which is commonly known as LED projection. Large ordinary projector lens are zoom, while the smart blackboard is more fixed-focus lens; focus and keystone correction is also different.

Projector, also known as a projector, is a device that can project images or video onto a curtain, and can play the corresponding video signals through different interfaces connected to computers, VCDs, DVDs, BDs, game consoles, DVs, and so on. Projectors are widely used in homes, offices, schools and entertainment venues, according to the different ways of working, there are different types of CRT, LCD, DLP, 3LCD and so on.