A server is a type of computer that runs faster, carries more load, and is more expensive than a regular computer. Servers provide computing or application services to other clients in the network, such as PCS, smartphones, ATMs and other terminals, and even large devices such as train systems. The server has high-speed CPU computing power, long-term reliable operation, strong I/O external data throughput capacity and better scalability.

According to the services provided by the server, generally speaking, the server has the ability to respond to service requests, undertake services, and guarantee services. As an electronic device, the internal structure of the server is very complex, but it is not much different from the internal structure of the ordinary computer, such as: cpu, hard disk, memory, system, system bus, etc