= = = = Brief Introductions: = = = = 1) Turn Normal PC into flat-panel computer 2) Turn A4 paper into digital writing board 3) This product is widely applied in teaching, lecture, multi-media net meeting, ....

= = = = 1. Working principles: = = = = It adopts electromagnetic induction technology. When writing or operating with electronic pen on projection area, it detects and captures the writing direction and....