介绍了一种以单片机为核心的多功能出租车计价器，该计价器采用单CPU结构，具有计量功能、掉电保护功能、语音功能等。文中阐述了系统的硬件及软件结构。-This paper present a new type of taximeter based on single chip microcomputer. In addition to metering the distance, this kind of taximeter have safe memory function, speech function and so on. The article mainly introduces the system hardware and software.