Card type microcomputerized tariff metering apparatus

The utility model relates to a card type micro-computerized charging apparatus, which is composed of a gear type counter assembly allocated with a microprocessor, a card reader and a card. A switch is connected near a counting gear or near a carrying gear; a given amount of using limit is purchased from the gauge controlled matter charging administration sector by using the magnetic card or the IC card (such as electricity, water and coal gas, etc.), and is input into the microprocessor; the switch is uninterruptedly driven when the counting table works; the microprocessor is started to proceed the dosing abatement calculation. The card type micro-computerized charging apparatus has simple structure, little alteration of the existing gear counting table, higher measuring accuracy, multiple functions, convenient using and administration and long lifetime, and can be widely used for the card charging reconstructions of the electric meter, the water meter and the gas meter, etc.