介紹了一種基于AT89S52微處理器、鍵控顯示模式、多漢字顯示的顯示模塊設(shè)計方法。對AT89S52的內(nèi)部功能及使用高128字節(jié)RAM時的尋址方式進(jìn)行說明。給出了四漢字顯示模塊的硬件電路原理圖、主程序流程圖以及中斷顯示流程圖。 Abstract: The design method of display module base on the AT89S52 microcontroller,display mode controlled by keyboard and? showing several Chinese characterses are introduced in the paper.The internal function and the addressing mode for the high 128B RAM of the AT89S52 are explained.The basic circuit diagram,the main program flow chart and the display interrupt flow chart of four Chinese characterses display module are also given.
上傳時間： 2014-01-23
上傳用戶：咔樂塢
基于CC1110單片機(jī)公交報站系統(tǒng)主要由CC1110單片機(jī)最小系統(tǒng)和WT588D語音模塊組成，提出了如何實(shí)現(xiàn)語音報站，通過無線通信SimpliciTI網(wǎng)絡(luò)協(xié)議實(shí)現(xiàn)公交站臺的自動播報和OLCD液晶顯示公交運(yùn)行的各類信息。結(jié)果表明，該公交報站系統(tǒng)報站準(zhǔn)確率99%，價格比同類產(chǎn)品下降了300%以上，系統(tǒng)組成結(jié)構(gòu)簡單，提高了系統(tǒng)的抗干擾性和穩(wěn)定性，也便于攜帶。 Abstract: The bus stop announcement system based on CC1110 MCU is composed of CC1110 MCU minimum system and WT588D voice module. How to achieve the voice announcing is put forward.The bus-stop will announce automatically and display on the OLCD by means of wireless communication SimpliciTI network protocol. As a result， the bus station stop announcement systems reported 99% accuracy rate， price of similar products declined by 300% or more， system of simple structure， improve the anti-jamming and stability of the power system， it is also portable.
標(biāo)簽： 1110 CC 單片機(jī) 公交報站
上傳時間： 2013-10-21
上傳用戶：baby25825
介紹了基于單片機(jī)航空交流電參數(shù)測試儀的系統(tǒng)設(shè)計。以Silicon Labs公司的C8051F005單片機(jī)為核心設(shè)計出數(shù)據(jù)采集板，通過RS-232串口與上位機(jī)通訊。運(yùn)用Lab Windows/CVI編寫的上位機(jī)軟件實(shí)現(xiàn)信號的檢測以及波形和數(shù)據(jù)的顯示，給出了測試儀硬件電路的組成和軟件流程圖。本系統(tǒng)具有硬件結(jié)構(gòu)簡單、容易實(shí)現(xiàn)和成本低等特點(diǎn)，在實(shí)際應(yīng)用中其穩(wěn)定性、精確性均能滿足客戶要求。 Abstract: The design of aeronautics AC parameters tester based on the single-chip is introduced.The core component of data acquisition board is C8051F005 single chip of Silicon Labs Company,and communication with PC through RS-232. The signal processing software programmed with LabWindows/CVI can be used successfully to fulfill inspection of signal and display of the waveform and data. The hardware and software configuration of test instrument are provided.The hardware of the system is simple, and can be easily realized.The stability and precision of the measurement instrument are enough to meet the requirements.
標(biāo)簽： C8051F005 單片機(jī) 儀的設(shè)計 參數(shù)測試
上傳時間： 2013-11-18
上傳用戶：wang5829
介紹了基于單片機(jī)C8051F020的通用串口適配器的設(shè)計與實(shí)現(xiàn)方法，即由單片機(jī)控制的智能化一對多口收發(fā)信號轉(zhuǎn)換器。通過采用C51對單片機(jī)進(jìn)行編程，控制與RS-232（標(biāo)準(zhǔn)RS-232電平）、RS232(TTL電平)、RS-422接口的數(shù)據(jù)通信；采用C++ Builder作為開發(fā)平臺，通過RS-232接口實(shí)現(xiàn)上位機(jī)對適配器各個通信端口的控制。 Abstract: Design and realization of a universal serial port adapter based on the MCU C8051F020 are introduced.The adapter is an intelligent one-to-more receiving and transmitting signal converter controlled by the MCU. By programming the MCU with the language C51,MCU control data communication between the MCU and RS-232(RS-232 level),RS-232(TTL level),RS-422 port; Using C++ Builder as the development plane, by one RS232 port, the upper PC can control each of the communication port of the adapter.
上傳時間： 2013-11-19
上傳用戶：hebanlian
在需要實(shí)時大量輸入漢字的顯示控制處理應(yīng)用中，利用傳統(tǒng)單片機(jī)實(shí)現(xiàn)顯示控制的設(shè)計方法是較難實(shí)現(xiàn)的。帶漢字字庫的液晶模塊的使用使得小容量ROM單片機(jī)的大量漢字信息輸入與顯示成為可能。提出了針對漢字字庫編碼的二級索引拼音輸入檢索方法,介紹了以ST7920作為控制器的帶漢字字庫的液晶顯示模塊的接口方法及漢字顯示和控制原理，給出了通用計算機(jī)鍵盤在單片機(jī)中的串行接口，采用該技術(shù)可大大增強(qiáng)單片機(jī)的漢字輸入功能。為小容量ROM單片機(jī)的大批量漢字信息處理提供了一種漢字輸入解決方案。 Abstract: It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the principle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this technology, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.
上傳時間： 2013-11-19
上傳用戶：jhksyghr
為解決傳統(tǒng)可視倒車?yán)走_(dá)視頻字符疊加器結(jié)構(gòu)復(fù)雜，可靠性差，成本高昂等問題，在可視倒車?yán)走_(dá)設(shè)計中采用視頻字符發(fā)生器芯片MAX7456。該芯片集成了所有用于產(chǎn)生用戶定義OSD，并將其插入視頻信號中所需的全部功能，僅需少量的外圍阻容元件即可正常工作。給出了以MAX7456為核心的可視倒車?yán)走_(dá)的軟、硬件實(shí)現(xiàn)方案及設(shè)計實(shí)例。該方案具有電路結(jié)構(gòu)簡單、價格低廉、符合人體視覺習(xí)慣的特點(diǎn)。經(jīng)實(shí)際裝車測試，按該方案設(shè)計的可視倒車?yán)走_(dá)視場清晰、提示字符醒目、工作可靠，可有效降低駕駛員倒車時的工作強(qiáng)度、減少倒車事故的發(fā)生。 Abstract: A new video and text generation chip，MAX7456，was used in the design of video parking sensor in order to simplify system structure，improve reliability and reduce cost. This chip included all the necessary functions to generate user-defined OSDs and to add them into the video signals. It could be put into work with addition of just a small number of resistances and capacitors. This paper provided software and hardware implementation solutions and design example based on the chip. The system had the characteristics of simplicity in circuit structure，lower cost，and comfort for the nature of human vision. Loading road test demonstrates high video and text display quality and reliable performance，which makes the driver easy to see backward and reduces chance of accidents.
標(biāo)簽： 7456 MAX 可視倒車 中的應(yīng)用
上傳時間： 2013-12-10
上傳用戶：qiaoyue
提出一種基于單片機(jī)AT89C51SND1C的MP3播放系統(tǒng)的設(shè)計方案。單片機(jī)集成了專用的解碼器，使用K9F1208閃存作為外存儲器，放音電路采用CS4330，存儲文件通過播放器上的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)計簡單，性價比高，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)的市場競爭能力和實(shí)用價值。 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.
上傳時間： 2014-12-27
上傳用戶：佳期如夢
為了在工業(yè)生產(chǎn)及過程控制中準(zhǔn)確測量溫度，設(shè)計了一種基于低功耗MSP430單片機(jī)的數(shù)字溫度計。整個系統(tǒng)通過單片機(jī)MSP430F1121A控制DS18B20讀取溫度，采用數(shù)碼管顯示，溫度傳感器DS18B20與單片機(jī)之間通過串口進(jìn)行數(shù)據(jù)傳輸。MSP430系列單片機(jī)具有超低功耗，且外圍的整合性高，DS18B20只需一個端口即可實(shí)現(xiàn)數(shù)據(jù)通信，連接方便。通過多次實(shí)驗證明，該系統(tǒng)的測試結(jié)果與實(shí)際環(huán)境溫度一致，除了具有接口電路簡單、測量精度高、誤差小、可靠性高等特點(diǎn)外，其低成本、低功耗的特點(diǎn)使其擁有更廣闊的應(yīng)用前景。 Abstract: In order to obtain accurate measuring temperature in industrial production and process control， a digital thermometer based on MSP430 MCU is designed. The system uses MSP430F1121A MCU to control DS18B20， and gets the temperature data， which is displayed on the LED. The temperature sensor DS18B20 and MCU transmit data through serial communication. MSP430 series has ultra-low power and high integration， DS18B20 only needs one port to achieve data communication. Through many experimental results prove， this system is consistent with actual environment temperature. The system has characteristics of interface circuit simple， high measuring accuracy， minor error， high reliability， besides， the characteristics of low cost and low power make it having vaster application prospect.
上傳時間： 2013-10-16
上傳用戶：wettetw
Bootloader是微處理器上電時運(yùn)行的第一段代碼，它可以通過通信接口實(shí)現(xiàn)對微處理器內(nèi)部應(yīng)用程序的更新升級，為網(wǎng)絡(luò)化嵌入式產(chǎn)品的應(yīng)用程序升級帶來極大的便利。由于目前沒有統(tǒng)一嵌入式系統(tǒng)的Bootloader。基于NEC 78K0系列單片機(jī)自編程原理，設(shè)計出一個適用于78K0/Fx2系列單片機(jī)的Bootloader，并能夠通過單片機(jī)串口在線升級應(yīng)用程序。 Abstract: Bootloader is the first piece of code executed after microprocessor startup. It makes the embedded product’s firmware update conveniently through communication interface. However， no unified bootloader is available for all kinds of microprocessor products. Based on the principle of self-programming NEC 78K0s’ series， a useful Bootloader which is suitable for 78K0/Fx2s’ series MCU is designed，the design can update the application through serial ports.
標(biāo)簽： Bootloader MCU 自編程
上傳時間： 2013-10-26
上傳用戶：fang2010
本文介紹了基于AT89C52 單片機(jī)的自動水溫控制系統(tǒng)的設(shè)計及實(shí)現(xiàn)過程。該系統(tǒng)具有實(shí)時顯示、溫度測量、溫度設(shè)定并能根據(jù)設(shè)定值對環(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 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
上傳時間： 2013-10-10
上傳用戶：歸海惜雪
蟲蟲下載站版權(quán)所有 京ICP備2021023401號-1
