Touch Monitor allows the user to operate the host by lightly touching the icons or characters on the computer display screen with a finger, thus getting rid of the keyboard and mouse operations and making the human-computer interaction more straightforward. Mainly used in public places lobby information query, leadership office, video games, ordering songs and dishes, multimedia teaching, air ticket/train ticket pre-sale, etc. The products are mainly divided into three categories: capacitive touch screen, resistive touch screen and surface acoustic wave touch screen.