Title Design and Implementation in Meter of Taxi Abstract This paper introduces the mutual benefit relationship between passenger and driver,it is necessary to study the accurate valuation implement.This paper introduces the design and implementation in meter of taxi that as the core of AT89C51, it expounds the hardware design process of key technologies of the processing. The meter is set the meter, timing, counting, storage and other functions. The design consists of two parts, the external hardware circuit design and software programming control, using the powerful single-chip technology, Taximeter complete hardware circuit design, and preparation of complete taxi valuation procedures, finally realizes the mileage measurement and calculation and display functions. Hardware debugging success coupled with appropriate software can complete the design tasks, with strong flexibility. The design in meter includes a clock circuit module, power-down memory module, detection module, the mileage LED display module, keyboard module.
Keywords MCU Holzer sensor clock chip digital tube display
