Advantages of touch screen:
1. There are no physical buttons to realize various operations, such as zooming in, moving, etc. using software.
2. Multi-touch (more than two points) can realize various inputs such as zoom in and zoom out.
3. The displayed operation object is consistent with the input object, with intuitive operability.
4. The integration of input and display can realize the miniaturization of the machine, and the degree of freedom of design is relatively high.
5. There will be no gaps like keyboards, switches, etc., which can enter garbage, dust, water, etc., not easy to damage, and easy to maintain.