【正文】 mmediately and even place it on your own Web page. Digital video cameras record motion digitally on a disk or in the camera′s memory(See Figure 762). Webcams are specialized digital video cameras that capture images and send them to a puter through the Inter and they are used to broadcast weather and traffics (See Figure 77). Figure 751 Figure 752 Figure 761 Figure 762Figure 78Figure 77 Audioinput devices convert sounds into a form that can be processed by a puter. The most widely used audioinput device is the microphone(See Figure 78)． A microphone, a sound card and special software make up a voice recognition system. The voice recognition system allows users to operate the puter and to create documents by using voice mands. What is Input? Notes: 1． “ Keyboards convert numbers, letters and special characters that people understand into electrical signals that are sent to and processed by the system unit.” 本句中， “ convert… into…” 意為：將 …… 轉(zhuǎn)化為 …… ；兩個 “ that”引導(dǎo)定語從句分別修飾 “ special characters”和 “ electrical signals”。 本句意為：鍵盤將人能夠理解的數(shù)字、字母和特殊符號轉(zhuǎn)化為計算機系統(tǒng)能夠發(fā)送和處理的信號。 2． “ A mouse can have two or more buttons used to select mand options and to control information presented on the monitor.” 本句中， “ used to… on the monitor”為過去分詞短語作后置定語修飾buttons，其中 “ to select mand options”和 “ to control information”兩個動詞不定式短語分別連接 “ used”。 本句意為：鼠標(biāo)有兩個或幾個按鍵，用于選擇指令和控制監(jiān)視器上顯示的信息。 What is Input? 3． “ Bar code readers are mostly used in supermarkets to read product representing bar codes on product containers and input the information to the puter which has stored the latest prices for the products to tell the electronic cash register the price of every product.” 本句中， “ product representing”意為：代表商品的； “ to read product”和“ input the information”為并列關(guān)系。 “ Which”引導(dǎo)定語從句修飾 “ the puter”； “ tell the electronic cash register the price of every product”意為告訴電子收款機每種商品的價格。 本句意為：條形碼讀卡機多用在超市讀取商品包裝上代表商品的條形碼，將商品信息輸入已經(jīng)存儲了各種商品最新價格的計算機，由計算機告訴電子收款機每種商品的價格。 4． “ Digital cameras are different from traditional cameras in that images are recorded digitally on a disk or in the camera′s memory rather than on film.” 本句中， “ in that”意為：在于 …… ， “ rather than”意為： “ 而不是 ……” 本句意為：數(shù)碼相機與傳統(tǒng)相機不同之處在于數(shù)碼相機照出的圖像以數(shù)碼形式記錄在磁盤上或相機的存儲器中而不是在膠片上。 What is Input? Grammar Focus：定語從句 定語從句：定語從句分為限制性和非限制性兩種。在句中做定語，修飾一個名詞或代詞，被修飾的名詞詞組或代詞即先行詞。定語從句通常出現(xiàn)在先行詞之后，由關(guān)系詞（關(guān)系代詞或關(guān)系副詞）引出。限制性定語從句是先行詞不可缺少的部分，去掉它主句意思往往不明確；非限制性定語從句是先行詞的附加說明，去掉了也不會影響主句的意思，它與主句之間通常用逗號分開。 What is Input? Ⅶ ． Point out the restrictive attributive Clauses or nonrestrictive attributive clauses in the following statements. 1． He returned the copies to Gradman, who took them without looking up. 2． That is all I can tell you. 3． They went side by side, hand in hand silently towards the hedge, where the mayflower, both pink and white, was in full bloom. 4． You′ve got to look after the things that you care for, yourself. 5． The Browns, who lived in the adjoining house, had been dining with the Joneses. 6． The money he lost was yours. 7． It was not the sort of house he was accustomed to. 8． All things shone softly in the sun, which was wonderfully warm and enlivening. 9． The wind pierced the woolen jumper she wore. 10． The woman rose: she opened a door, through which I saw a passage dimly. What is Input? Text in Chinese：輸入 計算機只理解二進位的機器語言 0和 1。輸入輸出設(shè)備充當(dāng)人機之間的翻譯工具。 輸入指計算機可以使用的數(shù)據(jù)或指令。用戶使用系統(tǒng)程序或應(yīng)用程序工作時就是在進行輸入。輸入設(shè)備是指為計算機提供輸入的硬件。最常用的輸入設(shè)備包括鍵盤、鼠標(biāo)、掃描儀、數(shù)碼相機、數(shù)碼寫字板和聲音識別設(shè)備。輸入設(shè)備把人理解的數(shù)字、字母、行為等翻譯為計算機能夠處理的符號。 鍵盤把數(shù)字、字母和特殊的字符轉(zhuǎn)換為電信號由計算機系統(tǒng)裝置來處理。鍵盤設(shè)計從傳統(tǒng)的鍵盤到人機工程學(xué)鍵盤到節(jié)省空間的折疊式鍵盤多種多樣。 定點輸入設(shè)備提供舒適的人機界面。定點輸入設(shè)備多種多樣，包括鼠標(biāo)、操縱桿、觸摸屏和光筆。 鼠標(biāo)有兩個或多個按鈕用來選擇命令和控制監(jiān)視