摘 要本文主要从硬件和软件两方面介绍了MCS-51系列单片机多功能计数器的设计思路，简单说明如何实现对计数的功能，并对硬件原理图和程序框图作了简洁的描述。本设计共分电源、单片机控制模块、信号前向通道处理模块、键盘、液晶显示模块、模数（A/D）转换模块、语音播报模块、测温及时钟八个模块。以51系列单片机为控制模块核心，对多功能计数器可编程控制，实现周期、频率、时间间隔的测量。同时可实现对测量结果、时钟、温度及被测信号幅度的液晶显示及语音播报。本设计介绍的单片机多功能计数器系统的主要内容包括：系统方案、元器件选择、系统理论分析、硬件设计、软件设计、系统调试及主要技术性能参数。关键词多功能；周期；频率；时间间隔；测量；语音播报AbstractThis paper mainly from two aspects of hardware and software design of MCS-51 series single chip multi-function counter, illustrates how to realize the function of count, and the hardware schematic diagram and program block diagram for a simple description. The design consists of a power supply, a single-chip control module, signal processing module, the keyboard forward channel, liquid crystal display module, analog-to-digital (A/D) conversion module, voice broadcastmodule, temperature measurement and clock module eight. With 51 seriesmicrocontroller as the core control module, the multifunctional counterprogrammable control, measurement of the cycle, frequency, time interval. At the same time, can realize the liquid crystal on the measurement results, the clock,temperature and the measured signal amplitude display and voice broadcast.The main content of multi-function counter system based on the design of thesystem, including: the component selection, system analysis, hardware design,software design, system debugging and the main technical performanceparameters.KeywordsMulti，Cycle，Frequency，Time interval measurement，Voice broadcast摘要.......................................................................
