c语言程序设计闹钟,基于单片机智能闹钟设计.doc

基于单片机智能闹钟设计.doc

基于单片机的智能闹钟设计

摘 要：本文通过单片机来实现电子打铃系统。基于单片机的智能闹钟设计包括：电源电路，单片机最小系统及扩展LCD显示电路，4*4矩阵键盘电路，打铃系统电路。本设计采用C语言编程，使用模拟软件驱动电路以实现其设计的各项功能。本文主要介绍了在设计过程中智能数字闹钟的软、硬件部分及在设计调试过程中遇到的一些问题以及解决方法。

关键词：单片机；智能数字闹钟； 电子打铃系统

Intelligent ?alarm clock design?based on MCU

Abstract：In this paper,?through the microcontroller to?achieve electronic?bell system.?Includes a?smart alarm clockdesign based on SCM:?power supply circuit,?MCU minimum?system and the expansion of LCD?display circuit,4*4?matrix keyboard circuit,?bell system?circuit.?This design uses the?C language programming,?the use of?simulation software?with the driving circuit?designed to achieve the various functions.?This paper mainly?introduces the?soft,hardware?part of intelligent?digital alarm clock?in the design process and?some problems in the?design of?the process of debugging?and solutions.

Keywords: Single-Chip Microcomputer; Intelligent digital alarm clock; bell system

目 录

TOC \o "1-3" \h \z \u HYPERLINK \l "_Toc395192316" 第一章 前 言 PAGEREF _Toc395192316 \h 1

HYPERLINK \l "_Toc395192317" 1.1 前言 PAGEREF _Toc395192317 \h 1

HYPERLINK \l "_Toc395192318" 1.2 需求分析 PAGEREF _Toc395192318 \h 2

HYPERLINK \l "_Toc395192319" 1.3指标及技术 PAGEREF _Toc395192319 \h 3

HYPERLINK \l "_Toc395192320" 1.4 实现功能方法 PAGEREF _Toc395192320 \h 3

HYPERLINK \l "_Toc395192321" 第二章 硬件设计 PAGEREF _Toc395192321 \h 5

HYPERLINK \l "_Toc395192322" 2.1 89C51内部结构简介 PAGEREF _Toc395192322 \h 5

HYPERLINK \l "_Toc395192324" 2.2 外部接口设备介绍 PAGEREF _Toc395192324 \h 6

HYPERLINK \l "_Toc395192325" 2.2.1矩阵式键盘 PAGEREF _Toc395192325 \h 6

HYPERLINK \l "_Toc395192326" 2.2.2 矩阵式键盘的结构与工作原理 PAGEREF _Toc395192326 \h 6

HYPERLINK \l "_Toc395192327" 2.2.3 矩阵式键盘的按键识别方法 PAGEREF _Toc395192327 \h 7

HYPERLINK \l "_Toc395192328" 2.2.4 液晶显示模块概述 PAGEREF _Toc395192328 \h 7

HYPERLINK \l "_Toc395192329" 2.3 电路设计 PAGEREF _Toc395192329 \h 8

HYPERLINK \l "_Toc395192330" 2.3.1.接口电路 PAGEREF _Toc395192330 \h 8

HYPERLINK \l "_Toc395192331" 2.3.2.电源电路 PAGEREF _Toc395192331 \h 8

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