基于单片机的智能教师点名器

范文编号:TX389  范文字数:10627,页数:29  附开题报告，文献综述，外文翻译 

摘要

 近年来，单片机以其功能强、体积小、使用方便、性能价格比高等优点,在实时控制、自动测试、智能仪表、计算机终端、遥测通讯、家用电器等许多方面得到了广泛的应用。
 本设计是基于ISD4004的智能教师点名器系统，可供多媒体教学时使用，对全班学生点名时，可以采用按顺序自动点名和随机点名两种方式。该系统在单片机AT89S51的控制下，可以先通过ISD4004语音芯片实现对学生姓名的录入，而后可以把语音芯片中录入的内容按顺序自动播放出来，当然也可以快速地把当前位置前面或者后面任一学生的姓名播放出来，同时两个数码管上会显示出所点学生的学号。教师通过该智能教师点名器可以在很短的时间内对学生进行考勤，缩短了老师考勤所用的时间，减轻了老师的工作量。
关键词：单片机、语音芯片、数码管

ABSTRACT

 Recently, MCS (Single Chip Micyoco) is widely used in real-time control, automatism testing, computer terminal, remote communication, home appliances by strong function, small bulk, used convenient and high capability-price ratio.
    It is a intellectual teacher's calling the roll device system based on ISD4004 to originally design , use when being suitable for the teaching of multimedia, to when the students of the whole class call the roll , can adopt two ways of calling the roll automatically siquentially and calling the roll at random . System this under one-chip computer control of AT89S51 , can realize , input through ISD4004 pronunciation chip to student name first, and then can broadcast the content included in the chip of the pronunciation in out automatically siquentially , can or following name of student any broadcast out present position fast too certainly, two number in charge of , have , can demonstrate some student of student numbers at the same time. Teacher call the roll through electron this function can go on the attendance to students in a short period of time, have lighten the teacher's work load, has shortened the time that teacher's attendance uses.

Keywords: Single-chip Computer、speech chip、nixie tube.
目录
摘要 I
ABSTRACT II
第1章 引言 1
 1.1 背景 1
 1.2 研究内容 2
第2章系统硬件设计及分析 3
 2.1系统方案设计 3
 2.2系统器件介绍 4
 2.2.1 AT89S51单片机 4
 2.2.2 ISD4004语音芯片 6
 2.2.3 音频功率放大器LM386 11
 2.2.4 可调线性稳压器LM317 12
 2.2.5 AT89S51 ISP 12
 2.2.6 驱动芯片74HC245 12
 2.3基于ISD4004的语音录放模块电路设计 13
 2.4最小系统板的电路设计 14
第3章：软件设计 15
 3.1 软件设计思想 15
 3.2程序设计 16
 3.2.1键盘及数码管显示 16
 3.2.2录音子程序 16
 3.2.3放音子程序 18
 3.2.4 显示上一个名字子程序 20
 3.2.5 显示下一个名字子程序 20
 3.3开发平台—Keil C51 开发系统 21
 3.4系统测试 22
第4章 结束语 23
致谢 24
参考文献 25

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