-
提出一種基于單片機(jī)AT89C51SND1C的MP3播放系統(tǒng)的設(shè)計(jì)方案。單片機(jī)集成了專用的解碼器，使用K9F1208閃存作為外存儲(chǔ)器，放音電路采用CS4330，存儲(chǔ)文件通過(guò)播放器上的USB接口設(shè)備從PC機(jī)上直接下載，液晶顯示采用LCD1602。方案設(shè)計(jì)簡(jiǎn)單，性價(jià)比高，低功耗，易擴(kuò)展。由于采用的是通用單片機(jī)實(shí)現(xiàn)的，可以很容易地移植到其他微控制器系統(tǒng)中，有很強(qiáng)的市場(chǎng)競(jìng)爭(zhēng)能力和實(shí)用價(jià)值。
Abstract:
A MP3 player design based on microchip AT89C51SND1C was presented, which used K9F1208 Flash chip as the memory circuit and used CS4330 as play chip. Storage files were download from PC through USB interfaces player on the device，and the LCD/602 was used as display screen. This system had characteristics of simple design,low power,easy expand，low cost and high recognition. Using of universual microchip make it easy to transplant to other microcontrol system，and have strong market competitiom and practical value.
標(biāo)簽：
89C
C51
MP3
AT
上傳時(shí)間：
2014-12-27
上傳用戶：佳期如夢(mèng)
-
本文介紹了基于AT89C52 單片機(jī)的自動(dòng)水溫控制系統(tǒng)的設(shè)計(jì)及實(shí)現(xiàn)過(guò)程。該系統(tǒng)具有實(shí)時(shí)顯示、溫度測(cè)量、溫度設(shè)定并能根據(jù)設(shè)定值對(duì)環(huán)境溫度進(jìn)行調(diào)節(jié)實(shí)現(xiàn)控溫的目的以及達(dá)到上下限溫度報(bào)警功能，控制算法是基于數(shù)字PID 算法。關(guān)鍵詞 ：PID AT89C52 脈寬調(diào)制 實(shí)時(shí)
Abstract ： This article describes AT89C52 single-chip microcomputer-basedautomatic water temperature control system design and implementation process. Thesystem has real-time display, temperature measurement, temperature settings and theenvironment in accordance with the temperature settings adjusted to achieve thepurpose of temperature control and reach the upper and lower limits of temperaturealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time
標(biāo)簽：
89S
S52
AT
89
上傳時(shí)間：
2013-10-10
上傳用戶：歸海惜雪
-
基于AT89C52單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì)
摘 要: 提出了一個(gè)由AT89C52單片機(jī)控制步進(jìn)電機(jī)的實(shí)例。可以通過(guò)鍵盤(pán)輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實(shí)時(shí)對(duì)步進(jìn)電機(jī)工作方式進(jìn)行設(shè)置, 具有實(shí)時(shí)性和交互性的特點(diǎn)。該系統(tǒng)可應(yīng)用于步進(jìn)電機(jī)控制的大多數(shù)場(chǎng)合。實(shí)踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進(jìn)電機(jī)控制器。
關(guān)鍵詞: 單片機(jī); 步進(jìn)電動(dòng)機(jī); 直流固態(tài)繼電器; 實(shí)時(shí)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.
標(biāo)簽：
89C
C52
AT
89
上傳時(shí)間：
2013-11-22
上傳用戶：vodssv
-
本文介紹了一種基于單片機(jī)的健身車轉(zhuǎn)速測(cè)量系統(tǒng)。該系統(tǒng)具有電路簡(jiǎn)單、使用方便等特點(diǎn)。文中詳細(xì)介紹了該系統(tǒng)的工作原理,并且給出了它的硬件原理圖和軟件設(shè)計(jì)程序框圖。關(guān)鍵詞:轉(zhuǎn)速 單片機(jī) 測(cè)量ABSTRACT :This paper introduces a measuring system of the rotational velocity of exercise bike based on single - chip microcomputer . It has such advantages : simple circuit ,convenient use and so on. The work principle is presented in detail in this paper and the block diagram of hardware and program flow chart are giv2 en as well .KEYWORDS :Rotational velocity Single - chip microcomputer Measuring
標(biāo)簽：
單片機(jī)
中的應(yīng)用
轉(zhuǎn)速測(cè)量
上傳時(shí)間：
2013-11-02
上傳用戶：源弋弋
-
本文依據(jù)集成電路設(shè)計(jì)方法學(xué)，探討了一種基于標(biāo)準(zhǔn)Intel 8086 微處理器的單芯片計(jì)算機(jī)平臺(tái)的架構(gòu)。研究了其與SDRAM，8255 并行接口等外圍IP 的集成，并在對(duì)AMBA協(xié)議和8086 CPU分析的基礎(chǔ)上，采用遵從AMBA傳輸協(xié)議的系統(tǒng)總線代替?zhèn)鹘y(tǒng)的8086 CPU三總線結(jié)構(gòu)，搭建了基于8086 IP 軟核的單芯片計(jì)算機(jī)系統(tǒng)，并實(shí)現(xiàn)了FPGA 功能演示。關(guān)鍵詞：微處理器； SoC；單芯片計(jì)算機(jī)；AMBA 協(xié)議
Design of 8086 CPU Based Computer-on-a-chip System（School of Electrical Engineering and Automation, Heifei University of Technology, Hefei, 230009,China）Abstract: According to the IC design methodology, this paper discusses the design of one kind of Computer-on-a-chip system architecture, which is based on the standard Intel8086 microprocessor,investigates how to integrate the 8086 CPU and peripheral IP such as, SDRAM controller, 8255 PPI etc. Based on the analysis of the standard Intel8086 microprocessor and AMBA Specification,the Computer-on-a-chip system based on 8086 CPU which uses AMBA bus instead of traditional three-bus structure of 8086 CPU is constructed, and the FPGA hardware emulation is fulfilled.Key words: Microprocessor; SoC; Computer-on-a-chip; AMBA Specification
標(biāo)簽：
8086
CPU
單芯片
計(jì)算機(jī)系統(tǒng)
上傳時(shí)間：
2013-12-27
上傳用戶：kernor
-
基于LabVIEW和單片機(jī)的空調(diào)溫度場(chǎng)測(cè)量系統(tǒng)的研究:室內(nèi)溫度是空調(diào)系統(tǒng)舒適性的重要指標(biāo),對(duì)其及時(shí)、準(zhǔn)確地測(cè)量顯得非常重要。介紹單片機(jī)AT89C51 和數(shù)字式、單總線型溫度傳感器DS18B20 組成矩形測(cè)量網(wǎng)絡(luò)采集空調(diào)室內(nèi)40 點(diǎn)溫度,LabVIEW作為開(kāi)發(fā)平臺(tái),二者之間通過(guò)串口實(shí)現(xiàn)數(shù)據(jù)通信,利用LabVIEW強(qiáng)大的數(shù)據(jù)處理和顯示功能對(duì)采集的空調(diào)溫度場(chǎng)數(shù)據(jù)進(jìn)行實(shí)時(shí)處理、分析和顯示,詳細(xì)介紹了系統(tǒng)的硬件結(jié)構(gòu)和軟件模塊的設(shè)計(jì)方案。關(guān)鍵詞:單片機(jī);DS18B20 ;LabVIEW;串行通信
Abstract : Temperature is a very important criterion of air condition system′s comfort , so it is very significant to measure it accurately and real timely. This paper int roduces a data acquisition system of measuring 40 point s temperature for air condition room based on single wire digital sensor DS18B20 and microcont roller AT89C51 which are composed of rectangle measuring meshwork. The data communication between LabVIEW and microcont roller is executed via serial port ,and the temperature field data of air condition room are processed analyzed and displayed on LabVIEW. The hardware and software modules are also given in detail.Keywords : single chip ;DS18B20 ;LabVIEW; serial communication
標(biāo)簽：
LabVIEW
單片機(jī)
空調(diào)
溫度場(chǎng)
上傳時(shí)間：
2014-05-05
上傳用戶：KSLYZ
-
一種實(shí)用的微機(jī)自動(dòng)配料秤系統(tǒng):介紹一種由單片機(jī)構(gòu)成的配料秤。敘述了秤的傳感器、變送器、信號(hào)的變換、硬件原理、軟件流程以及和DCS 系統(tǒng)構(gòu)成的單回路調(diào)節(jié)系統(tǒng),此系統(tǒng)可廣泛地應(yīng)用于各行業(yè)的配料控制中。關(guān)鍵詞:配料秤 單片機(jī) 單回路調(diào)節(jié)系統(tǒng) DCS 系統(tǒng)
Abstract :A proportioning weigher based on single chip computer is introduced. Sensors , transmitters , signal converting , principle of hardware ,software flowchart of proportioning weigher and single loop control system composed with DCS system are emphasized ,this system can be used in proportioning control of various trades extensively.Key Words :Proportioning Weigher ,Single Chip Computer ,Single Loop Control System ,Distributed Control System
標(biāo)簽：
微機(jī)
自動(dòng)
配料秤
上傳時(shí)間：
2013-10-12
上傳用戶：zwei41
-
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision1.1.This application note describes a demonstration program that has been written for the DK3200 hardwaredemonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to workwith the device, using the HID class as a ready-made device driver for the USB connection.IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can executecode from one memory while erasing and programming the other. Product firmware updates in thefield can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)using this unique architecture. For In-Application-Programming (IAP), all code is updated through theMCU. The main advantage for the user is that the firmware can be updated remotely. The target applicationruns and takes care on its own program code and data memory.IAP is not the only method to program the firmware in μPSD devices. They can also be programmed usingIn-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. Withthis, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, anywhere, even when completely uncommitted.Both methods take place with the device in its normal hardware environment, soldered to a printed circuitboard. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amountof resident code to receive the service commands, and to perform the desired operations.
標(biāo)簽：
Demonstration
3200
USB
for
上傳時(shí)間：
2014-02-27
上傳用戶：zhangzhenyu
-
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontroller Core. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementation of the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision 1.1.This application note describes a demonstration program that has been written for the DK3200 hardware demonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to work with the device, using the HID class as a ready-made device driver for the USB connection.
標(biāo)簽：
3234A
uPSD
3234
3200
上傳時(shí)間：
2014-04-03
上傳用戶：lizhizheng88
-
基于單片機(jī)的汽車多功能報(bào)警系統(tǒng)設(shè)計(jì)The Design of Automobile Multi-function AlarmingBased on Single Chip Computer劉法治趙明富寧睡達(dá)(河 南 科 技 學(xué) 院 ，新 鄉(xiāng) 453 00 3)摘要介紹了一種基于單片機(jī)控制的汽車多功能報(bào)警系統(tǒng)，它能對(duì)汽車的潤(rùn)滑系統(tǒng)油壓、制動(dòng)系統(tǒng)氣壓、冷卻系統(tǒng)溫度、輪胎欠壓及防盜進(jìn)行自動(dòng)檢測(cè)，并在發(fā)現(xiàn)異常情況時(shí)，發(fā)出聲光報(bào)警。闡述了該報(bào)警系統(tǒng)的硬件組成及軟件設(shè)計(jì)方法。關(guān)鍵詞單片機(jī)傳感器數(shù)模轉(zhuǎn)換報(bào)警Abstract Am ulti-fimctiona utomobilea larnungs ystemb asedo ns inglec hipc omputerco ntorlis in torducedin th isp aper.Th eo ilpr essuero flu bricatesystem, air pressure of braking system, temperature of cooling system, under pressure of tyre and guard against theft， detected automaticaly場(chǎng)thesystem. Audio and visual alarms wil be provided under abnormal conditions廠The hardware composition and software design of the system， described.Keywords Singlec hipc omputer Sensor Digital-t-oanaloguec onversion Alarmin
汽車多功能報(bào)苦器硬件系統(tǒng)設(shè)計(jì)根據(jù) 系 統(tǒng) 實(shí)際需要和產(chǎn)品性價(jià)比，選用ATMEL公司新生產(chǎn)的采用CMOs工藝的低功耗、高性能8位單片機(jī)AT89S52作為系統(tǒng)的控制器。AT89S52的片內(nèi)有8k Bytes LSP Flash閃爍存儲(chǔ)器，可進(jìn)行100(〕次寫(xiě)、擦除操作;256Bytes內(nèi)部數(shù)據(jù)存儲(chǔ)器(RAM);3 2 根可編程輸N輸出線;2個(gè)可編程全雙工串行通道;看門(mén)狗(WTD)電路等。系統(tǒng)由傳感器、單片機(jī)、模數(shù)轉(zhuǎn)換器、無(wú)線信號(hào)發(fā)射電路、指示燈驅(qū)動(dòng)電路、聲光報(bào)警驅(qū)動(dòng)電KD一9563，發(fā)出三聲二閃光。并觸發(fā)一個(gè)高電平，驅(qū)動(dòng)無(wú)線信號(hào)發(fā)射電路。
標(biāo)簽：
單片機(jī)
汽車
多功能
報(bào)警
上傳時(shí)間：
2013-11-09
上傳用戶：gxmm
