設(shè)計一種基于AT89C52的語音錄放系統(tǒng)，利用單片機、ISD2560語音錄放器件、麥克風(fēng)、揚聲器等元器件實現(xiàn)硬件電路的設(shè)計，并利用C51高級語言設(shè)計ISD2560器件控制字的寫入和定時中斷程序。經(jīng)軟硬件調(diào)試，結(jié)果表明該系統(tǒng)錄放效果良好，具有一定的工程實用價值。
Abstract:
Voice recording and playback system based on AT89C52is designed in this paper.Using the single-chip microcomputer，voice recording and playback chip ISD2560，microphone and speaker to realize the hardware circuit design.Writing ISD2560control words and timing interrupt procedures are designed by C51advanced language.Through the hardware and software test,voice recording and playback system play better voice,and this system has some engineering practical values.
闡述了一個由上位PC機和AT89C52下位單片機組成的主從分布式溫度巡回檢測系統(tǒng)。主從機采用RS-485 串行通訊標(biāo)準(zhǔn)進行通信，可在下位單片機實現(xiàn)基本的溫度數(shù)據(jù)巡回檢測基礎(chǔ)上，由上位PC機實現(xiàn)綜合處理功能或擴展為遠程操作。整個系統(tǒng)具有巡檢速度快，擴展性好的特點。
Abstract:
In this paper,a top PC and AT89C52 under-bit microcontrollers from the main component of the tour distributed temperature detection system is presented. Master and slave can use RS-485 serial communication standards for communications.Based on next-bit machine for basic goods temperature detected data Tour, the top can achieve the integrated treatment of PC functions or for the expansion of long-distance operation. The entire inspection system is fast, expansion.
從系統(tǒng)硬件設(shè)計和軟件構(gòu)成上，介紹一種以AT89C52單片機為核心,通過無線遙控方法實現(xiàn)對預(yù)設(shè)電話自動撥號報警的智能呼救系統(tǒng)。系統(tǒng)提供了患者在緊急情況下無法使用電話報警時的一種報警手段。由用戶預(yù)設(shè)的多組電話號碼作為語音報警對象,預(yù)錄可長達20 s的語音信號來說明患者所處地點及病情，并通知患者家人。
Abstract:
This paper introduces a intelligent alarming system which is realized by wireless remote control system.This system chiefly consists of AT89C51 the system can processor.User can input several groups of telephone number regarded as alarming objects,The system can record some information 20 seconds to tell the site of the patient.And notice the rokonok of the patient.
基于AT89C52單片機的步進電機控制系統(tǒng)設(shè)計
摘 要: 提出了一個由AT89C52單片機控制步進電機的實例。可以通過鍵盤輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實時對步進電機工作方式進行設(shè)置, 具有實時性和交互性的特點。該系統(tǒng)可應(yīng)用于步進電機控制的大多數(shù)場合。實踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進電機控制器。
關(guān)鍵詞: 單片機; 步進電動機; 直流固態(tài)繼電器; 實時控制
ABSTRACT: A stepp ing motor control system based on AT89C52 chip microcomputer was described.The data can be inputwith keyboard, and stepp ingmotorwas controlled by these data. According to the demand, users can set the workingmodel of stepp ingmotor in real2time. This system can be widely used in stepp ing motor controlling. The p ractice showed that the performance of this system outdid the tradi-tional stepp ing motor controller.
The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8Kbytes of Flash programmable and erasable read only memory (PEROM). The deviceis manufactured using Atmel’s high-density nonvolatile memory technology and iscompatible with the industry-standard 80C51 and 80C52 instruction set and pinout.The on-chip Flash allows the program memory to be reprogrammed in-system or by aconventional nonvolatile memory programmer. By combining a versatile 8-bit CPUwith Flash on a monolithic chip, the Atmel AT89C52 is a powerful microcomputerwhich provides a highly-flexible and cost-effective solution to many embedded controlapplications.
