基于單片機(jī)的教師點(diǎn)名器

電子信息工程論文編號(hào):DZXX220  論文字?jǐn)?shù):10649,頁數(shù):28

目錄
基于單片機(jī)的教師點(diǎn)名器 I
摘要 I
ABSTRACT II
第1章 引言 1
1.1 背景 1
1.2 研究內(nèi)容 2
第2章 系統(tǒng)硬件設(shè)計(jì)及分析 3
2.1 系統(tǒng)方案設(shè)計(jì) 3
2.2系統(tǒng)器件介紹 4
2.2.1 AT89S51單片機(jī) 4
2.2.2 ISD4004語音芯片 6
2.2.3 音頻功率放大器LM386 11
2.2.4 可調(diào)線性穩(wěn)壓器LM317 12
2.2.5 AT89S51 ISP 12
2.2.6 驅(qū)動(dòng)芯片74HC245 12
2.3 基于ISD4004的語音錄放模塊電路設(shè)計(jì) 13
2.4 最小系統(tǒng)板的電路設(shè)計(jì) 14
第3章 軟件設(shè)計(jì) 15
3.1 軟件設(shè)計(jì)思想 15
3.2程序設(shè)計(jì) 16
3.2.1 鍵盤及數(shù)碼管顯示 16
3.2.2 錄音子程序 16
3.2.3 放音子程序 18
3.2.4 顯示上一個(gè)名字子程序 20
3.2.5 顯示下一個(gè)名字子程序 20
3.3 開發(fā)平臺(tái)—Keil C51 開發(fā)系統(tǒng) 21
3.4 系統(tǒng)測(cè)試 22
第4章 結(jié)束語 23
致謝 24
參考文獻(xiàn) 25

摘要

 近年來，單片機(jī)以其功能強(qiáng)、體積小、使用方便、性能價(jià)格比高等優(yōu)點(diǎn),在實(shí)時(shí)控制、自動(dòng)測(cè)試、智能儀表、計(jì)算機(jī)終端、遙測(cè)通訊、家用電器等許多方面得到了廣泛的應(yīng)用。
 本設(shè)計(jì)是基于ISD4004的智能教師點(diǎn)名器系統(tǒng)，可供多媒體教學(xué)時(shí)使用，對(duì)全班學(xué)生點(diǎn)名時(shí)，可以采用按順序自動(dòng)點(diǎn)名和隨機(jī)點(diǎn)名兩種方式。該系統(tǒng)在單片機(jī)AT89S51的控制下，可以先通過ISD4004語音芯片實(shí)現(xiàn)對(duì)學(xué)生姓名的錄入，而后可以把語音芯片中錄入的內(nèi)容按順序自動(dòng)播放出來，當(dāng)然也可以快速地把當(dāng)前位置前面或者后面任一學(xué)生的姓名播放出來，同時(shí)兩個(gè)數(shù)碼管上會(huì)顯示出所點(diǎn)學(xué)生的學(xué)號(hào)。教師通過該智能教師點(diǎn)名器可以在很短的時(shí)間內(nèi)對(duì)學(xué)生進(jìn)行考勤，縮短了老師考勤所用的時(shí)間，減輕了老師的工作量。
關(guān)鍵詞：單片機(jī)、語音芯片、數(shù)碼管

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.