基于单片机的数字温度计设计课程设计（仿真+c程序））大学学位论文.doc

前言 科技发展到今天,人们的生活中涌现出各种各样的科技产品,各种各样的电子产品更是花样百出、遍及人们生活中的每一部分,现在人们更是感觉到了科技给人们带来的巨大发展,科学技术作为第一生产力在人类社会的发展中起了很大的推动作用,人类从原始向先进的发展都伴随着科学的发展。当今微型计算机技术发展形成两大分支，一是以微处理器（Micro Processor Unit)为核心所构成的通用微机系统，主要用于科学计算、数据处理、图形图像处理、数据库管理、人工智能、数字模拟与仿真等领域。另一分支是为控制器( Micro Controller Unit)，俗称单片机。单片机主要用于工业测控，如家用电器、计算机外围设备、工业智能化仪表、机器人、生产过程的自动控制、农业、化工、军事、航空航天等领域。 单片机是一种集成在电路芯片，是采用超大规模集成电路技术把具有数据处理能力的中央处理器CPU随机存储器RAM、只读存储器ROM、多种I/O口和中断系统、定时器/计时器等功能（可能还包括显示驱动电路、脉宽调制电路、模拟多路转换器、A/D转换器等电路）集成到一块硅片上构成的一个小而完善的计算机系统。 单片机也被称为微控制器（Microcontroller Unit）STC89C52；DS18B20；PROTEUS； The monolithic integrated circuit has the volume small, the power loss low, the control function strong, the expansion nimble, merits and so on microminiaturization and easy to operate, widely applies in the instrument measuring appliance, the union different type sensor, may realize such as physical quantity and so on voltage, power, frequency, humidity, temperature, current capacity, speed, thickness, angle, length, degree of hardness, element, pressure surveys.This curriculum design was in studies in the monolithic integrated circuit basic principle to carry on, the comprehensive utilization studied the monolithic integrated circuit knowledge to complete a monolithic integrated circuit application system design. This article mainly introduced based on the 89S52 monolithic integrated circuit temperature measurement system, in detail described the use numeral temperature sensor DS18B20 development temperature measurement system process, key to the sensor under monolithic integrated circuit hardware connection, the software programming as well as various modules system flow has carried on the exhaustive analysis, 11 has also carried on the introduction to various part of electric circuits, This system may facilitate realization temperature gathering and the demonstration, and may according to need to establish the bound to report to the police willfully the temperature, it uses quite conveniently, has the precision high, the