随着电子技术的发展,出租车计价器技术也在不断进步和提高,国内出租车计价器已经经历了四个阶段的发展,从传统的全部由机械元器件组成的机械式,到半电子式即用电子线路代替部分机械元器件的出租车计价器,再从集成电路式到目前的单片机系统设计的出租车计价器。

本设计是以单片机AT89C51为核心,以8279、7407, 75451等智能芯片为外设的出租车计价器的微机系统设计，该系统满足集计程、计时、计费、存储、查看、统计等多种计量功能为一体的出租车计价器的实用要求。给出了硬件电路图及主程序流程图,阐述了软硬件设计过程中关键技术的处理。

-With the development of electronic technology, technology has also Taximeter continued progress and improve, the domestic Taximeter has gone through four stages of development, from the traditional mechanical components of all mechanical components, to semi-Electronics type that is used in electronic circuits instead of mechanical components Taximeter, from integrated circuits type to the current single-chip system design Taximeter.

The design is based on AT89C51 single-chip microcomputer as the core, 8279,7407, 75451, such as a smart chip for peripheral Taximeter computer system design, the system to meet the set of process, time, billing, storage, viewing, and Statistics variety of measurement functions Taximeter practical requirements. Give the hardware circuit and the main program flow chart to explain the hardware and software design process deal with the key technology.