毕业论文（设计）基于AT89C51单片机的出租车计价器系统设计说明书.docVIP

摘要：随着出租车行业的发展，对出租车计费器的要求也越来越高。二十世纪后半期，随着集成电路和计算机技术的飞速发展，单片机技术也得到了飞速发展，基于的出租车计费器不仅可以解决电子系统小型化、低功耗、高可靠性等问题，而且其开发周期短、开发软件投入少、芯片价格不断降低，特别是对小批量、多品种的产品需求，As the taxi industry, taxi meters on the request also getting higher and higher. The latter half of the 20th century, along with integrated circuits and the rapid development of computer technology, SCM technology has been developing rapidly, based on SCM taxi meters can not only solve the electronic system of small, low-power, high - Reliability and other issues, and its short development cycle, a smaller software development, chip prices are lower, especially for small quantities, and more varieties of product demand, MCU is small in size, high reliability and strong features, such as a low price Series of advantages, not only has become widely adopted in the field of industrial measurement and control of intelligent control, but also to have infiltrated into peoples work and life and every corner of a powerful impetus to the technological transformation of various industries and the upgrading of products, the application of a broad prospect. (SCM use of the relatively simple external circuit), in time count and the speed of calculation is very easy expansion of functions, the system can be realized upgrade. Numerical wrote a lot of chips in advance. The curriculum design assumptions for the constant speed of 60 Km / h, that is, 1 Km / min.  Learn this lesson, a major application MCU timer / counter, and disruption. This is a relatively small system, the use of assembly language to edit. Compilation of language is a compiler-based programming language, it has compiled fast, occupy space on the system, have some help in mind the characteristics of readability.  The system assumed a constant speed of 60 Km / h (1Km/min), priced some 1.3 yuan / Km, with fares starting 5.0 yuan, accounting began more than three kilometers, and 1.3 yuan per km. Key words:axi-billing、AT89C51、imer / counter 目录 1 前言 1 1.1 我国出租车的发展 1 1.2 现阶