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1、8位二進(jìn)制數(shù)字密碼鎖系統(tǒng)設(shè)計(jì)外文文獻(xiàn)翻譯(譯成中文3000字左右):1.Digital Circuit IntroductionDigital circuit definition:Completes with the digital signal to the digital quantity carries on the arithmetic operation and the logic operation electric circuit is called the digital circuit, or number system. Because it has the logic

2、operation and the logical processing function, therefore calls then umeral logic circuit.Numeral logic circuit classification (according to function minute):1st, combinatory logic electric circuitThe abbreviation combination circuit, it becomes by the most basic logical gate electric circuit combina

3、tion. The character is tic is: Output value only and then input value related, namely output only by then input value decision. The electric circuit has not remembered the function, the output condition changes along with the input condition change, is similar to the resistance electric circuit, lik

4、e the accumulator, the decoder, the encoder, the data selector and so on all belong to this kind.2nd, succession logic circuitThe abbreviation sequence circuit, it is adds on the feed back logic return route by the most basic logical gate electric circuit (to output the electric circuit which input)

5、 or the component combination becomes, lies in the sequence circuit with the combination circuit essence difference to have the memory function. The sequence circuit characteristic is: The output not only was decided by then input value, moreover also the and circuit past condition concerned. It is

6、similar to containing the stored energy part the inductance or the electric capacity electric circuit, like electric circuit and so on trigger, latch, counter, shift register, reservoir all is the sequence circuit typical component.Digital circuit characteristic:1st, simultaneously has the arithmeti

7、c operation and the logic operation functionThe digital circuit is take the binary system logic algebra as mathematics foundation, the use binary numeral signal, both can carryon the arithmetic operation and to be able conveniently to carry on the logic operation (with, or, non-, judgment, compariso

8、n, processing and so on), therefore extremely suits to application and so on operation, comparison, memory, transmission, control, decision-making.2nd, realization simple, the system is reliableBy binary system underlie numeral logic circuit, simple reliable, the accuracy is high.3rd, integration ra

9、te high, the function realization is easyIntegration rate high, volume small, the power loss is low is one of digital circuit prominent merits. Electric circuit design, service, maintenance nimble convenient, along with the integrated circuit technology high speed development, the numeral logic circ

10、uit integration rate is more and more high, integrated circuit block function along with small scale integration electric circuit (SSI),center scale integrated circuit (MSI), large scale integrated circuit(LSI), ultra large scale integrated circuit (VLSI) the development also from the part level, th

11、e component level, the part level, the board card level rises to the system level. The electric circuit design composition only must use some standards the integrated circuit block unit connection to become. Also may use the programmable foreword logic array electric circuit regarding the non- stand

12、ard special electric circuit, through programming method realization free logic function.Digital circuit application:Digital circuit and numeral electronic technology widespread application to science and technology each domain and so on television, radar, correspondence, electronic accounting machi

13、ne, automatic control, astronautics.2.Digital code lock System Status and Development TrendRecent years, along with reform and open policy thorough development, electronic appliance's swift development. People's living standard had the very big enhancement. Each kind of upscale electrical ap

14、pliances product and the valuables have for many families. However some unlawful elements are also more and more. This sees majority of person security consciousness also insufficient. Creates steals the phenomenon to be common. Therefore, more and more resident families worried to the property secu

15、rity problem. the alarm apparatus had been solving many problems by now for the people. But in the market alarm apparatus majority of use in some big company fiscal institution. The price is soaring, generally the people accept with difficulty. If redesigns and produces one kind moderately-priced, t

16、he performance keen reliable burglar alarm, will certainly plays a more effective role in security and the guarantee property security aspect. As the electronic code lock is a password to enter the control circuits, or chips, so as to control mechanical switches closed, the completion of the lock, c

17、losed the task of electronic products. It's a lot of species, there is a simple circuit products as well as chip-based products more cost-effective. Now a wider application of electronic locks is at the core chip.The electronic technology has obtained the rapid development, under its impetus, th

18、e electronic products nearly seeped society's each domain now, powerfully impelled in the social product development and the social becoming an information based society degree enhancement, simultaneously also is makes the modern electronic products performance further to enhance, the product re

19、newal rhythm more and more is also quick. First the EDA technology after enters for the 21st century, obtained the very big development, its basic characteristic uses the higher order language description, has System the simulation and the synthesizing capacity. The VHDL hardware description languag

20、e is designs the source document to be possible to use is similar with the C language written form, and uses the structural design method. Along with the people living standard enhancement, the password lock took the family security bodyguard's function is day by day important, it compared to ha

21、s some unique superiority with the ordinary mechanical phase-lock, for example: Secret, the security performance is good, may not use the key, so long as remembers the password then unlock.The EDA technique develops trend: The EDA technique is after get into 21 centuries, because of more large-scale

22、 FPGA and continuously release of the cave m spare part are really imitate with design the both side support a standard hardware description, the function strong EDA software of the language continuously renews, increment, make the electronics EDA's technique get a larger development. The electr

23、onics technique is all-directions to bring into EDA realm, the EDA make electronics the boundary of each academics of realm be getting more misty, more with each other in order to forgive, the outstanding performance is at following few aspects: Make electronics design the result can definitely expr

24、ess to make possible with confirmation by independent intelligent property right; Design standard unit according to the ASIC of EDA tool have already covered large-scale electronics system and the IP pit mold piece; The soft hardware IP pit gets further confirmation in industry realm, technique real

25、m and the design applied realm of electronics profession; The SoC efficiently low cost design technical maturity. Along with the semi-conductor technique, integrated technique and the calculator technical fast fierce development, design method and design means of electronics system all took place ve

26、ry big variety. Can say electronics EDA's technique's is an electronics design is a revolution of the realm. The design method of traditional” fix function integration piece ten on-lines" just and gradually with draws history stage, but is become modern main current of design of the ele

27、ctronics system according to the design method of chip. Be Gao Deng3 college's understanding and climbing to hold this advanced technique concerning the professional student and the large electronics engineer be certainly to be necessarily going, this not only is the demand of efficiency of the

28、exaltation design, more that time generation need for develop, only climbed to hold the EDA technique just includes the competition that the ability participates the industrial market of the world electronics, then can exist with development. Along with the progress of science and technique revoluti

29、on of the realm and electronics industry field of the electronics design, also in the meantime to electricity course of teaching and research put forward more deeply higher request. Especially the EDA technique hasn't make widely available in the our country and control is this all new technique

30、 with universality, will to our country the electronics technical development have profound meaning.3.Electronic Lock System of Non-contact IC CardBased on the research of RS485 and TCP/IP Communication Protocol, the paper introduces an Electronic Lock System of Non-contact IC card and puts forwards

31、 the solution of the whole system. This system adopts distributed architecture and is combined with the centralized and unified management. It can be classified into three aspects: management center server, user building PC and Electronic Cipher Locks. The paper emphases on the general principle and

32、 the design of hardware and software of this kind of Electronic Cipher Lock system, which takes Micro-controller STC89C58RD+ chip as core and Philips MFRC530 for RF base station. Compared with the traditional Electronic Lock system, this system has significant advantages. The results prove the feasi

33、bility of the scheme and show that the system is stable and has a good real-time performance.4. Electronic Cipher Locks by the Use of AT89C2051 MCUAs electronic products are developing towards intelligence and minimization, micro control unit(MCU) have become the first choice for controllers in the

34、development of electronic products. In order to expand the applications of MCU in to household appliances, a new designing method of electronic cipher locks by the use of AT89C2051 MCU is introduced in this paper.It shows that the cipher lock is characterized by its low cost and high degree of safet

35、y and practicality. Besides, it works well as a residence lock and has great potential for commercial development.5. Giving-alarm Electronic Password LockThis article introduces one kind of giving-alarm electronic password lock, using unidirectional thyristor as the storage cell. The digital key of

36、this kind of lock is composed of 10 lightly touched switch. 5 of the codes open the lock, the other 5 codes are used to alarm. If the password is right, so long as pressing down the 5 digital keys at one time or according to the order, the electronic lock will be open quickly. If the password is wro

37、ng, pressing the giving-alarm key will bring a 30s alarm:“to catch the thief”.6. the Infrared Long-distance Remote Control Which the Numerical Ciphers LockSpecialized numerical ciphers lock the infrared long-distance remote control is one kind of quite advanced password switch, this article designs

38、one through the telephone through the infrared remote control realization opposite party opening which locks with the equipment password, the user use handset dials in his/her family's fixed telephone, to the telephone number which dials carries on the recognition by the monolithic integrated ci

39、rcuit realization, with confirmed whether its number for does unlock the telephone number, if is master's telephone number, the monolithic integrated circuit sends out the signal control infrared launcher, the realization long-distance remote control unblanking. This article elaborated the infra

40、red remote control basic principle and has designed the corresponding transmission and the accepting circuit, again uses correlation chip NE555, CX20106, HT9030 the function characteristic, the composition auxiliary circuit, forms the hardware diagram; Second step then key conducts the research to a

41、t89C51 monolithic integrated circuit, the cost design software designs and draws the flow chart. Finally this design essential duty is take AT89C51 as a core, various functions module organic union. Through the monolithic integrated circuit control, realizes the function which each separation compon

42、ent cannot complete. Namely finally realizes the infrared long-distance remote control which the numerical ciphers lock.1.數(shù)字電路簡(jiǎn)介數(shù)字電路定義:用數(shù)字信號(hào)完成對(duì)數(shù)字量進(jìn)行算術(shù)運(yùn)算和邏輯運(yùn)算的電路稱(chēng)為數(shù)字電路,或數(shù)字系統(tǒng)。由于它具有邏輯運(yùn)算和邏輯處理功能,所以又稱(chēng)數(shù)字邏輯電路。數(shù)字邏輯電路分類(lèi)(按功能分):1.組合邏輯電路簡(jiǎn)稱(chēng)組合電路,它由最基本的的邏輯門(mén)電路組合而成。特點(diǎn)是:輸出值只與當(dāng)時(shí)的輸入值有關(guān),即輸出惟一地由當(dāng)時(shí)的輸入值決定。電路沒(méi)有記憶功能,輸出狀態(tài)隨著輸入狀

43、態(tài)的變化而變化,類(lèi)似于電阻性電路,如加法器、譯碼器、編碼器、數(shù)據(jù)選擇器等都屬于此類(lèi)。2.時(shí)序邏輯電路簡(jiǎn)稱(chēng)時(shí)序電路,它是由最基本的邏輯門(mén)電路加上反饋邏輯回路(輸出到輸入)或器件組合而成的電路,與組合電路最本質(zhì)的區(qū)別在于時(shí)序電路具有記憶功能。時(shí)序電路的特點(diǎn)是:輸出不僅取決于當(dāng)時(shí)的輸入值,而且還與電路過(guò)去的狀態(tài)有關(guān)。它類(lèi)似于含儲(chǔ)能元件的電感或電容的電路,如觸發(fā)器、鎖存器、計(jì)數(shù)器、移位寄存器、儲(chǔ)存器等電路都是時(shí)序電路的典型器件。數(shù)字電路的特點(diǎn):1.同時(shí)具有算術(shù)運(yùn)算和邏輯運(yùn)算功能數(shù)字電路是以二進(jìn)制邏輯代數(shù)為數(shù)學(xué)基礎(chǔ),使用二進(jìn)制數(shù)字信號(hào),既能進(jìn)行算術(shù)運(yùn)算又能方便地進(jìn)行邏輯運(yùn)算(與、或、非、判斷、比較、處理

44、等),因此極其適合于運(yùn)算、比較、存儲(chǔ)、傳輸、控制、決策等應(yīng)用。2.實(shí)現(xiàn)簡(jiǎn)單,系統(tǒng)可靠以二進(jìn)制作為基礎(chǔ)的數(shù)字邏輯電路,簡(jiǎn)單可靠,準(zhǔn)確性高。3.集成度高,功能實(shí)現(xiàn)容易集成度高,體積小,功耗低是數(shù)字電路突出的優(yōu)點(diǎn)之一。電路的設(shè)計(jì)、維修、維護(hù)靈活方便,隨著集成電路技術(shù)的高速發(fā)展,數(shù)字邏輯電路的集成度越來(lái)越高,集成電路塊的功能隨著小規(guī)模集成電路(SSI)、中規(guī)模集成電路(MSI)、大規(guī)模集成電路(LSI)、超大規(guī)模集成電路(VLSI)的發(fā)展也從元件級(jí)、器件級(jí)、部件級(jí)、板卡級(jí)上升到系統(tǒng)級(jí)。電路的設(shè)計(jì)組成只需采用一些標(biāo)準(zhǔn)的集成電路塊單元連接而成。對(duì)于非標(biāo)準(zhǔn)的特殊電路還可以使用可編程序邏輯陣列電路,通過(guò)編程的

45、方法實(shí)現(xiàn)任意的邏輯功能。數(shù)字電路的應(yīng)用:數(shù)字電路與數(shù)字電子技術(shù)廣泛的應(yīng)用于電視、雷達(dá)、通信、電子計(jì)算機(jī)、自動(dòng)控制、航天等科學(xué)技術(shù)各個(gè)領(lǐng)域。2.數(shù)字密碼鎖系統(tǒng)的研究現(xiàn)狀和發(fā)展趨勢(shì)近年來(lái),隨著改革開(kāi)放政策的深入發(fā)展,電子設(shè)備的迅速發(fā)展。人民生活水平有很大提高。各類(lèi)高檔家電產(chǎn)品種類(lèi)和貴重物品有許多家庭。但一些不法分子也越來(lái)越多。這說(shuō)明大多數(shù)人的安全意識(shí)還不夠,因而偷竊的現(xiàn)象很普遍。因此,越來(lái)越多的居民家庭擔(dān)心他們的財(cái)產(chǎn)安全問(wèn)題。報(bào)警器已經(jīng)解決了現(xiàn)在許多人的問(wèn)題。但在市場(chǎng)上,大多數(shù)使用報(bào)警器的都是一些大公司的財(cái)政機(jī)構(gòu)。且報(bào)警器的價(jià)格不斷攀升,一般人難以接受。如果重新設(shè)計(jì)并產(chǎn)生一種價(jià)廉,性能十分可靠的防

46、盜報(bào)警器,一定會(huì)在安全和保障財(cái)產(chǎn)安全方面發(fā)揮更有效的作用。由于電子密碼鎖是密碼進(jìn)入控制電路或芯片,以控制機(jī)械開(kāi)關(guān)的關(guān)閉,關(guān)閉后,完成了對(duì)電子產(chǎn)品的鎖住任務(wù)。它有很多種類(lèi),有一個(gè)簡(jiǎn)單的集成電路產(chǎn)品以及芯片為基礎(chǔ)的產(chǎn)品更具成本效益。現(xiàn)在的電子鎖的廣泛應(yīng)用是核心芯片。電子技術(shù)獲得了飛速的發(fā)展,在其推動(dòng)下,現(xiàn)在電子產(chǎn)品幾乎滲透了社會(huì)的各個(gè)領(lǐng)域,有力地推動(dòng)了社會(huì)生產(chǎn)里的發(fā)展和社會(huì)信息化程度的提高,同時(shí)也是使現(xiàn)代電子產(chǎn)品性能進(jìn)一步提高,產(chǎn)品更新?lián)Q代的節(jié)奏也越來(lái)越快。首先EDA技術(shù)在進(jìn)入21世紀(jì)后,得到了很大的發(fā)展,其基本特征是采用高級(jí)語(yǔ)言描述,具有系統(tǒng)級(jí)仿真和綜合能力。VHDL硬件描述語(yǔ)言是設(shè)計(jì)源文件可以采用類(lèi)似與C語(yǔ)言的書(shū)寫(xiě)形式,并采用結(jié)構(gòu)設(shè)計(jì)方法。隨著人們生活水平的提高,密碼鎖作為家庭防盜衛(wèi)士的作用日趨重要,它與普通機(jī)械鎖相比有一些獨(dú)特的優(yōu)勢(shì),如:保密性強(qiáng),防盜性能好,可以不用鑰匙,只要記住密碼即可開(kāi)鎖。EDA技術(shù)發(fā)展趨勢(shì): EDA技術(shù)在進(jìn)入21世紀(jì)后,由于更大

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