文档介绍：基于单片机具有录音功能的音乐闹钟的设计
摘 要
电子技电和电算机技电电用电域不电大～电片机技电已成电电子技电电域中的一新的断个
亮点～电片机自出电以已走电了近来20年的电展路程。着电片机技电的迅猛电展和电随
用电域不电大断,电电电片aper, a smart alarm clock music design. This design is from the central controller, the clock system, monitor and keyboard parts. Controllers using SCM AT89C51, the clock system uses the . company's ISD4002 DALLAS real-time clock chip, it will have the time to signal transmitted to the microcontroller, SCM through 74 LS48 decoding, LED 8 of the digital display of the current Time, When in the course of time set by the arrival of the alarm time, will play music, and at this time of the LED digital display is no longer time but a code that only users of this code from the keyboard on the correct input into the Music can be closed, otherwise, would have been broadcast on music. Users can set the alarm through the keyboard of the time and correction time.
,～～～ ～singlechipISD4002Smart alarm clockLED digital displayKeywords
～AT89C51intelligent
目 电
摘 要
Abstract
第 章 引 言 1 ................................................................................................................. 4
本电电的究背景研 ................................................................................................... 4
音电电电外电展电国内状 ............................................................................................. 4
本电电的主要究容及意电研内 ................................................................................. 5第 章 音电电电系电电成及分析 2 ......................................................................................... 6
音电电电系电原理 ....................................................................................................... 6
音电电电系电电电电电算法 ............................................................................................... 6第 章 音电电电系电硬件电电 3 ............................................................................................... 9
电电路电电架电框 ........................................................................