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  3. 學習啦>學習電腦>電腦入門>《電腦的硬件組成部分》正文

    電腦的硬件組成部分

    時間:2015-10-30 15:24:05本文內容及圖片來源于讀者投稿,如有侵權請聯系xuexila888@qq.com 廣達 我要投稿

      電腦最基本的硬件組成,你又知道多少?下面是電腦硬件的知識,希望學習啦小編整理的對你有用,歡迎閱讀:
     

      電腦最基本的硬件組成:

      所謂硬件,就是用手能摸得著的實物,一臺電腦一般有:

      1、主機:主機從外觀看是一個整體,但打開機箱后,會發現它的內部由多種獨立的部件組合而成。

      下面介紹一下電腦主機的各個部件:

      (1) 電源:電源是電腦中不可缺少的供電設備,它的作用是將220V交流轉換為電腦中使用的5V,12V,3.3V直流電,其性能的好壞,直接影響到其他設備工作的穩定性,進而會影響整機的穩定性。

      (2) 主板:主板是電腦中各個部件工作的一個平臺,它把電腦的各個部件緊密連接在一起,各個部件通過主板進行數據傳輸。也就是說,電腦中重要的“交通樞紐”都在主板上,它工作的穩定性影響著整機工作的穩定性。

    電腦的硬件組成部分

      (3) CPU:CPU(Central Precessing Unit)即中央處理器,其功能是執行算,邏輯運算,數據處理,傳四舍五入,輸入/輸出的控制電腦自動,協調地完成各種操作。作為整個系統的核心,CPU 也是整個系統最高的執行單元,因此CPU已成為決定電腦性能的核心部件,很多用戶都以它為標準來判斷電腦的檔次。

      (4) 內存:內存又叫內部存儲器(RAM),屬于電子式存儲設備,它由電路板和芯片組成,特點是體積小,速度快,有電可存,無電清空,即電腦在開機狀態時內存中可存儲數據,關機后將自動清空其中的所有數據。

      (5) 硬盤:硬盤屬于外部存儲器,由金屬磁片制成,而磁片有記功能,所以儲到磁片上的數據,不論在開機,還是關機,都不會丟失。

      (6) 聲卡:聲卡是組成多媒體電腦必不可少的一個硬件設備,其作用是當發出播放命令后,聲卡將電腦中的聲音數字信號轉換成模擬信號送到音箱上發出聲音。

      (7) 顯卡:顯卡在工作時與顯示器配合輸出圖形,文字,其作用是負責將CPU送來的數字信號轉換成顯示器識別的模擬信號,傳送到顯示器上顯示出來。

      (8) 調制解調器:調制解調器是通過電話線上網時必不可少的設備之一。它的作用是將電腦上處理的數字信號轉換成電話線傳輸的模擬信號。

      (9) 網卡:網卡的作用是充當電腦與網線之間的橋梁,它是用來建立局網的重要設備之一。

      (10) 軟驅:軟驅用來讀取軟盤中的數據。軟盤為可讀寫外部存儲設備。

      (11) 光驅:光驅是用來讀取光盤中的設備。光盤為只讀外部存儲設備,其容量為650MB左右。

      2、顯示器:顯示器有大有小,有薄有厚,品種多樣,其作用是把電腦處理完的結果顯示出來。它是一個輸出設備,是電腦必不可缺少的部件之一。

      3、鍵盤:鍵盤是主要的輸入設備,用于把文字,數字等輸到電腦上。

      4、鼠標:當人們移到鼠標時,電腦屏幕上就會有一個箭頭指針跟著移動,并可以很準確切指到想指的們位置,快速地在屏幕上定位,它是人們使用電腦不可缺少的部件之一。

      5、音箱:通過它可以把電腦中的聲音播放出來。

      6、打印機:通過它可以把電腦中的文件打印到紙上,它是重要的輸出設備之一。

      7、攝像頭、掃描儀、數碼像機等設備。

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