The composition structure of cloud computing, including infrastructure, cloud computing operating system, product system (including security and compliance, monitoring and management), solution system, and service system.

The working principle of the camera can be divided into four key steps: optical imaging, electrical signal conversion, digital signal processing and image output.

The principle of wireless charging is through near-field induction, the wireless charging device conducts energy to the charging terminal device, and then the terminal device converts the received energy into electrical energy and stores it in the device's battery.

Blockchain technology changes the original remittance mode of confirming and transmitting node by node like a relay race to real-time synchronized parallel confirmation by business nodes through distributed ledger technology, which improves efficiency and changes the operation mode.

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