This word is believed that as long as you are familiar with the digital field, you will not be unfamiliar with it. Resolution is the precision of screen image, which refers to the number of pixels displayed by the display. Since the dots, lines and surfaces on the screen are all composed of pixels, the more pixels the display can display, the finer the picture will be, and the more information can be displayed in the same screen area, so the resolution is one of the very important performance indicators. The whole image can be thought of as a large chessboard, and the resolution is expressed by the number of intersection points of all longitude and latitude lines.

The working principle of the projector is based on the fusion of optical and electronic technologies.

A chip is a tiny circuit board made of semiconductor materials such as silicon on which a large number of electronic components, such as transistors, capacitors, resistors, etc., are integrated.

Cell phone NFC and Bluetooth has now been very widely used, the principle is the radio transmission technology, but they have a fundamental difference.

Bluetooth headset is one of the indispensable audio devices in our daily life, in order to provide a better audio experience, Bluetooth headset gradually adopted the noise reduction technology, so that users can quietly enjoy the pure world of music.