Innovation in Educational Hardware of Multimedia Projection Equipment

To improve the efficiency and quality of teaching an innovation in educational hardware is presented. Two infrared receiver processors composed of photosensitive element,infrared reflective mirror rotated with changeless rate and infrared emitter as datum time are installed at the corner of multimedia projection screen to locate infrared pen used by teachers. Computer can be operated from multimedia projection screen and teachers are released from computer console to write on large screen and communicate with students at random.