計(jì)算機(jī)專業(yè)英語的課文與翻譯-wenkub
2023-04-19 01:50:24 本頁面
【正文】 tream from the DTE. And DCE converts it to some form of analog signal suitable for transmission on voicegrade lines. At the receive end, the DCE performs the reverse function. It converts the received analog signal to a serial digital data stream. The simplest form of DCE is a modem (modulator/demodulator) or data set. At the transmit end, the modem can be considered a form of digitaltoanalog converter. While at the receive end, it can be considered a form of analogtodigital converter.參考譯文數(shù)據(jù)通信終端設(shè)備可以是計(jì)算機(jī)、打印機(jī)、鍵盤、CRT等。輔助設(shè)備一方的相應(yīng)設(shè)備是工作站控制器（STACO）。在接收端，DCE完成相反的功能，把接收到的模擬信號(hào)轉(zhuǎn)換成串行數(shù)字?jǐn)?shù)據(jù)流。 However, more protocols deviate from the rules set up by the OSI model.The OSI model has seven layers. Note that the OSI model itself is not a network architecture. It just tells what each layer should do. However, ISO has also produced standards for all the layers. Each one has been published as a separate international standard.(2) the TCP/IP reference modelTCP/IP is a munication protocol。(1) OSI參考模型OSI模型（開放系統(tǒng)互聯(lián)參考模型）是由國(guó)際標(biāo)準(zhǔn)化組織（ISO）開發(fā)的一個(gè)建議。應(yīng)該注意的是，OSI模型本身并不是一種網(wǎng)絡(luò)體系結(jié)構(gòu)，它只是說明每一層應(yīng)該做什么。TCP表明是處于傳輸層，IP意為是在網(wǎng)絡(luò)層?，F(xiàn)在我們知道，TCP/IP協(xié)議是因特網(wǎng)的基礎(chǔ)。通過定義可知，這種連接一定是高速并且相對(duì)廉價(jià)的（如：令牌網(wǎng)和以太網(wǎng)）。局域網(wǎng)的大小一般限制在一個(gè)部門或者一個(gè)組織，由2～100臺(tái)電腦組成。(1) 拓?fù)浣Y(jié)構(gòu)大多數(shù)廣域網(wǎng)，如公共電話交換網(wǎng)（PSTN），使用網(wǎng)狀（有時(shí)稱為網(wǎng)絡(luò)）拓?fù)浣Y(jié)構(gòu)；而局域網(wǎng)由于用戶數(shù)據(jù)終端設(shè)備相距很近，可采用簡(jiǎn)單的拓?fù)浣Y(jié)構(gòu)。(2) 傳輸媒體雙絞線、同軸電纜和光纖是局域網(wǎng)采用的3種主要傳輸媒體。 you only need to know the phone number of the person you want to reach.With an Internet connection you can get some of the basic services available are: Usenet news. It’s a distributed bulletin board which offers a bination news and discussion service on thousands of topics. access databases for teaching or research. access superputer sites.It was estimated that at this rapid growth everyone in the world would have an address in the near future.參考譯文互聯(lián)網(wǎng)因特網(wǎng)是世界上很多人用來進(jìn)行商業(yè)貿(mào)易和個(gè)人信息交流的網(wǎng)絡(luò)，它非常巨大。一個(gè)互聯(lián)網(wǎng)可以向它的用戶提供各式各樣的業(yè)務(wù)。從用戶的角度來看，其工作方式很像電話系統(tǒng)的工作方式。它是與世界范圍內(nèi)的因特網(wǎng)用戶進(jìn)行聯(lián)系的一種快速、方便、廉價(jià)的交流方式。 新聞組網(wǎng)絡(luò)系統(tǒng)。一種因特網(wǎng)信息資源的超文本界面。 從計(jì)算機(jī)檔案庫(kù)存儲(chǔ)器中拷貝文件或軟件。 獲取免費(fèi)電子圖書。 使用目錄服務(wù)以查找因特網(wǎng)用戶。Text 5 The World Wide WebThe World Wide Web (also known as WWW or Web) is one of the fastestgrowing Internet software applications. It is an architectural framework. It linked documents spread out over thousands of machines for accessing all over the Internet. The World Wide Web ties the puters together into a vast collection of interactive multimedia resources. The WWW is
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