A terminal can be understood as an external device of a computer, such as a monitor, a printer, etc. Now the terminal refers to no CPU, memory, only a display, controller and keyboard of a device, it can not work independently, only through the connection of the server to work, now the financial system used by the UNIX multi-user time-sharing system is through the connection of the terminal to achieve multi-user simultaneous operation.
The charging system of the telecommunications sector is also used to share data through this way of connecting terminals. The most typical example of a terminal is a card reader on a bus company bus. In today's era of rapid development of information, terminal equipment has been widely used in people's real life, such as the PDA mobile phone we use, car GPRS system, supermarket POS machine and so on.
Also known as terminal equipment, is the most peripheral equipment in the computer network, mainly used for the input of user information and the output of processing results.
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In early computer systems, because the computer host is expensive, a host is generally configured with multiple terminals, which do not have computing power themselves, and only undertake the work of information input and output, and the calculation and processing are completed by the host.