who invented the document camera. The primary basis for development, because only with the spirit of teachers, will there be a willingness to choose a career as a teacher. In a general sense, the teacher's spirit refers to the teacher's consciousness, thinking activities and general psychological state. Teacher knowledge is an essential foundation for teacher professional development. Logically speaking, teacher professional development requires corresponding teacher knowledge: teaching students to learn knowledge, educate people's knowledge and service knowledge. The knowledge that teaches students to learn includes what the teacher teaches and what the students learn. The knowledge of educating people includes knowledge that promotes student development, moral education knowledge, mental health knowledge, life planning knowledge, etc.; knowledge of services includes organizing knowledge, Scientific research knowledge, teaching and research knowledge, etc. Teacher competence is the necessary foundation for teacher professional development: teacher competence includes two parts: subject ability and professional ability. The subject ability is the ability of teachers to solve subject problems based on the knowledge of subject knowledge. Professional ability is the logical church for teachers based on students' learning and development knowledge. The ability of students to learn, educate and serve.. Interactive Document Camera is a completely new concept design and mobile visualizer. The touch capability on IQTouch and IQBoard, IQView E3511 Document Camera can be freely used for presentations anywhere in or out of the classroom or office.