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  3. 學習啦>學習電腦>電腦入門>《BIOS和CMOS的區別與聯系》正文

    BIOS和CMOS的區別與聯系

    時間:2015-10-12 16:37:07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

      BIOS是一組設置硬件的電腦程序,保存在主板上的一塊EPROM或EEPROM芯片中,里面裝有系統的重要信息和設置系統參數的設置程序——BIOS Setup程序。以下是學習啦小編給大家整理的BIOS知識,希望能幫到你!
     

      什么是BIOS?

      BIOS就是(Basic Input/Output System,基本輸入/輸出系統的縮寫)在電腦中起到了最基礎的而又最重要的作用。是電腦中最基礎的而又最重要的程序。把這一段程序放在一個不需要供電的記憶體(芯片)中,這就是平時所說的BIOS。

      它為計算機提供最底層的、最直接的硬件控制,計算機的原始操作都是依照固化在BIOS里的內容來完成的。準確地說,BIOS是硬件與軟件程序之間的一個接口或者說是轉換器,負責解決硬件的即時需求,并按軟件對硬件的操作要求具體執行。電腦使用者在使用計算機的過程中,都會接觸到BIOS,它在計算機系統中起著非常重要的作用。

      什么是CMOS?

      CMOS,即:Complementary Metal Oxide Semiconductor——互補金屬氧化物半導體(本意是指互補金屬氧化物半導體存儲囂,是一種大規模應用于集成電路芯片制造的原料),是微機主板上的一塊可讀寫的RAM芯片,主要用來保存當前系統的硬件配置和操作人員對某些參數的設定。CMOS RAM芯片由系統通過一塊后備電池供電,因此無論是在關機狀態中,還是遇到系統掉電情況,CMOS信息都不會丟失。

      BIOS和CMOS的區別與聯系:

      BIOS是一組設置硬件的電腦程序,保存在主板上的一塊EPROM或EEPROM芯片中,里面裝有系統的重要信息和設置系統參數的設置程序——BIOS Setup程序。而CMOS即:Complementary Metal Oxide Semiconductor——互補金屬氧化物半導體,是主板上的一塊可讀寫的RAM芯片,用來保存當前系統的硬件配置和用戶對參數的設定,其內容可通過設置程序進行讀寫。CMOS芯片由主板上的鈕扣電池供電,即使系統斷電,參數也不會丟失。CMOS芯片只有保存數據的功能,而對CMOS中各項參數的修改要通過BIOS的設定程序來實現。

      BIOS與CMOS既相關又不同:BIOS中的系統設置程序是完成CMOS參數設置的手段;CMOS RAM既是BIOS設定系統參數的存放場所,又是 BIOS設定系統參數的結果。因此,完整的說法應該是“通過BIOS設置程序對CMOS參數進行設置”。由于 BIOS和CMOS都跟系統設置密初相關,所以在實際使用過程中造成了BIOS設置和CMOS設置的說法,其實指的都是同一回事,但BIOS與CMOS卻是兩個完全不同的概念,切勿混淆。

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