數字電路基礎知識畢業(yè)設計外文翻譯

1、<p><b>　　原文：</b></p><p>　　Digital circuit definition:</p><p>　　Completes with the digital signal to the digital quantity carries onthe arithmetic operation and the logic operati

2、on electric circuit iscalled the digital circuit, or number system. Because it has the logicoperation and the logical processing function, therefore calls thenumeral logic circuit.</p><p>　　Numeral logic cir

3、cuit classification (according to function minute):</p><p>　　1st, combinatory logic electric circuit</p><p>　　The abbreviation combination circuit, it becomes by the mostbasic logical gate elect

4、ric circuit combination. The characteristicis: Output value only and then input value related, namely output onlyby then input value decision. The electric circuit has not rememberedthe function, the output condition cha

5、nges along with the inputcondition change, is similar to the resistance electric circuit, likethe accumulator, the decoder, the encoder, the data selector and so onall belong to this kind.</p><p>　　2nd, succ

6、ession logic circuit</p><p>　　The abbreviation sequence circuit, it is adds on the feedbacklogic return route by the most basic logical gate electric circuit (tooutput the electric circuit which input) or th

7、e component combinationbecomes, lies in the sequence circuit with the combination circuitessence difference to have the memory function. The sequence circuitcharacteristic is: The output not only was decided by then inpu

8、tvalue, moreover also the and circuit past condition concerned. It issimilar to containing the stored e</p><p>　　Digital circuit characteristic:</p><p>　　1st, simultaneously has the arithmetic o

9、peration and the logicoperation function</p><p>　　The digital circuit is take the binary system logic algebra asmathematics foundation, the use binary numeral signal, both can carryon the arithmetic operatio

10、n and to be able conveniently to carry onthe logic operation (with, or, non-, judgement, comparison, processingand so on), therefore extremely suits to application and so onoperation, comparison, memory, transmission, co

11、ntrol, decision-making.</p><p>　　2nd, realization simple, the system is reliable</p><p>　　By binary system underlie numeral logic circuit, simplereliable, the accuracy is high.</p><p&

12、gt;　　3rd, integration rate high, the function realization is easy</p><p>　　Integration rate high, volume small, the power loss is low isone of digital circuit prominent merits. Electric circuit design,servic

13、e, maintenance nimble convenient, along with the integratedcircuit technology high speed development, the numeral logic circuitintegration rate is more and more high, integrated circuit blockfunction along with small sca

14、le integration electric circuit (SSI),center scale integrated circuit (MSI), large scale integrated circuit(LSI), ultra large scale integrated circu</p><p>　　Digital circuit application:</p><p>

15、　　Digital circuit and numeral electronic technology widespreadapplication to science and technology each domain and so ontelevision, radar, correspondence, electronic accounting machine,automatic control, astronautics.&l

16、t;/p><p><b>　　數字電路定義：</b></p><p>　　用數字信號完成對數字量進行算術運算和邏輯運算的電路稱為數字電路，或數字系統。由于它具有邏輯運算和邏輯處理功能，所以又稱數字邏輯電路。</p><p>　　數字邏輯電路分類（按功能分）：</p><p><b>　　1、組合邏輯電路</b

17、></p><p>　　簡稱組合電路，它由最基本的的邏輯門電路組合而成。特點是：輸出值只與當時的輸入值有關，即輸出惟一地由當時的輸入值決定。電路沒有記憶功能，輸出狀態(tài)隨著輸入狀態(tài)的變化而變化，類似于電阻性電路，如加法器、譯碼器、編碼器、數據選擇器等都屬于此類。</p><p><b>　　2、時序邏輯電路</b></p><p>　　簡稱

18、時序電路，它是由最基本的邏輯門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，與組合電路最本質的區(qū)別在于時序電路具有記憶功能。時序電路的特點是：輸出不僅取決于當時的輸入值，而且還與電路過去的狀態(tài)有關。它類似于含儲能元件的電感或電容的電路，如觸發(fā)器、鎖存器、計數器、移位寄存器、儲存器等電路都是時序電路的典型器件。</p><p><b>　　數字電路的特點：</b></p>

19、<p>　　1、同時具有算術運算和邏輯運算功能</p><p>　　數字電路是以二進制邏輯代數為數學基礎，使用二進制數字信號，既能進行算術運算又能方便地進行邏輯運算（與、或、非、判斷、比較、處理等），因此極其適合于運算、比較、存儲、傳輸、控制、決策等應用。</p><p>　　2、實現簡單，系統可靠</p><p>　　以二進制作為基礎的數字邏輯電路，

20、簡單可靠，準確性高。</p><p>　　3、集成度高，功能實現容易</p><p>　　集成度高，體積小，功耗低是數字電路突出的優(yōu)點之一。電路的設計、維修、維護靈活方便，隨著集成電路技術的高速發(fā)展，數字邏輯電路的集成度越來越高，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、器件級、部件級、板