Projection touch machine

Advantages: traditional interactive electronic whiteboard: need to connect different equipment such as PC, projector, various cables disorderly; The ordinary electronic white board should be used with the projector. The projected image is not clear. The projector bulb darkens due to the prolonged use time and the service life is limited. Projection needs darkroom environment, students can see clearly the projection content but can not see clearly the teacher's expression; In front of the dazzling light, the teacher's eyes caused damage, and will appear on the screen shadow; It is difficult for students to concentrate, and the efficiency of class needs to be improved.
Touch all-in-one machine: high integration, integrated PC, projection system, curtain, display system, sound, multi-touch control in one; Hd display screen, clear image, no front projection dazzling problem; Not affected by external light source, simple installation, built-in computer; HDMI with high - definition multimedia interface.