Large user fee calculation terminal

The utility model discloses a large user fee calculation terminal which comprises a controller, an RS485 communication circuit, an RS232 maintenance circuit, an RTC real-time clock circuit and a key display unit. The controller is connected to the RS485 communication circuit and provides an RS485 communication interface to the terminal. The controller is connected to the RTC real-time clock circuit which provides real-time time to the terminal and is connected to the key display unit. A power supply circuit provides a power supply for other circuits. The controller is connected to the RS232 maintenance circuit. According to the large user fee calculation terminal, the total electricity fee and basic electricity fee, power cost and power factor adjustment electricity fee of a large industrial user are calculated, the data statistical and analysis work is carried out according to the data source in a data storage module, the recent electricity use habit of the user is recorded, the user is guided to use electricity reasonably, and the extra electricity fee expenditure is reduced.