Multi-user power-driven terminal

The present invention discloses a prepaid electric control device, in particular electrical multi-user terminal, which comprises a power metering unit, a circuit breaker, a microprocessor, a media card reader, a clock calendar circuit, a nonvolatile memory, photoelectric separator, encryption circuits, man-machine interface circuit, a display and status indicator. Handler is provided with electricity, and the user card processing program and a multi-rate meter zero processing program in the microprocessor. May "undo" a plurality of users when the available power in turn, stop power electricity, the remaining amount with the write back machine, stored on the card. Anti-strong attack of the invention, electromagnetic compatibility, safe and reliable operation of the data.