【正文】 ge）均是由語音（ pronunciation）、詞匯（ vocabulary）和語法（ grammar）三大部分構(gòu)成的。ll need a standard phone cable to connect the modem to your phone line. The standard connector on a telephone cable is called an RJ11. On the back of your modem, you39。ve got a serial mouse plugged into COM1, then just plug the modem into COM2. If you don39。t, it will ask you which COM port your modem is attached to. If you don39。s internal, the only way to reset it is to turn off your puter and reboot, which can take several minutes every time you need to reset your modem. To connect an external modem to your puter, you39。s speaker. Believe it or not, there is actually meaning in all that noise. A modem on the other end of the line can understand it and converts the sounds back into digital information. Modems e in different speeds and are measured in bps or bits per second. A kbit/s modem sends data at 28,800 bits per second. A 56 kbit/s modem is twice as fast, sending and receiving data at a rate of 56,000 bits per second. Most modems today are 56 kbit/s. Why does speed matter? On the Inter, you are constantly exchanging data with other puters. Some of these digital files can be quite large. As you will soon learn, you want this exchange to happen as quickly as possible. If you are purchasing a modem, get the fastest one available. What is Input? Modems e in different speeds and can be installed inside your puter (internal), or connected to your puter39。此系統(tǒng)能夠連續(xù)幾小時錄音口授內(nèi)容，再連接計算機系統(tǒng)進行編輯、儲存和打印。最廣泛使用的聲頻輸入設(shè)備是麥克風(fēng)。網(wǎng)頁鏡頭是專業(yè)的數(shù)碼攝像機，它能夠抓取圖像，然后將圖像通過因特網(wǎng)發(fā)送到計算機里 , 用于天氣預(yù)報和交通狀況通報。使用數(shù)碼相機可以在照相后立即在相機里看到還可以把照片發(fā)送到網(wǎng)頁上。這些設(shè)備包括數(shù)碼相機和數(shù)碼攝像機等。例如，用在銀行中讀出含磁性物質(zhì)墨水寫出的字符。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)儲存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。掃描設(shè)備一般分為三種：光電掃描儀、條形碼讀卡機、 字符和標志識別裝置。無線鼠標以電池為動力用電波或紅外線波與計算機系統(tǒng)通信。這種鼠標有導(dǎo)線連接到計算機系統(tǒng)，在光滑表面移動鼠標，底部的滾輪控制屏幕上的指示器，左右按鈕選擇項目。鼠標一般有三種設(shè)計：機械鼠標、光電鼠標和無線鼠標。定點輸入設(shè)備多種多樣，包括鼠標、操縱桿、觸摸屏和光筆。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。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。輸入設(shè)備是指為計算機提供輸入的硬件。 輸入指計算機可以使用的數(shù)據(jù)或指令。 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。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。 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。 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。 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。 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”。第