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11.11 最強折扣反應熱烈!
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11.11 最強折扣反應熱烈!
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什麼是調製解調器?

調製解調器是允許您的計算機、智能手機、平板電腦和其他設備連接到互聯網的設備。它通過將來自這些設備的數字信號轉換為可以通過電話線或有線網絡傳輸的模擬信號來實現這一點。調製解調器還可以執行相反的操作,將傳入的模擬信號轉換為數字信號,以便您的設備可以處理它們。

調製解調器是現代世界中必不可少的設備。它是一種電子設備,使計算機能夠連接到互聯網並與全球其他計算機進行通信。如果沒有調製解調器,您將無法訪問互聯網或在設備之間發送文件。

調製解調器代表什麼?

“調製解調器”一詞代表調製器-解調器。簡單地說,調製解調器用於將數字信號轉換為模擬信號,以便可以通過電話線進行傳輸。接收數據時也會發生相反的過程:模擬信號轉換為數字信號以供計算機或其他設備使用。調製解調器提供計算機和萬維網之間的關鍵鏈接。

什麼是路由器?

路由器是一種電子設備,充當兩個網絡之間的中介;在這種情況下,路由器接收來自調製解調器的數據包,並將它們路由到本地網絡中的正確目的地。這可能意味著將流量從本地網絡上的一台計算機路由到本地網絡上的另一台計算機,或者將來自互聯網的數據包路由到本地網絡上的多台計算機。路由器還提供附加功能,例如 Wi-Fi 覆蓋(用於連接無線設備)、防火牆保護、端口轉發(用於遊戲/VOIP 應用程序)等。

路由器有多種形式,包括有線、無線以及同時包含有線和無線功能的組合單元。它們的尺寸也多種多樣,從小型插入式裝置到帶有多個天線以提供更好信號強度的大型壁掛式型號。

調製解調器和路由器的區別

調製解調器和路由器之間的主要區別在於,調製解調器提供對互聯網的直接訪問,而路由器則在單個網絡上將多個設備連接在一起。如果沒有路由器,則在任何給定時間只有一台設備可以直接連接到調製解調器。路由器允許多台計算機或移動設備通過 Wi-Fi 或通過直接連接到其端口的電纜進行無線連接。調製解調器充當您和 ISP 之間的網關,而路由器則充當您和通過 Wi-Fi 或以太網電纜連接到其的所有設備之間的網關。如果兩個組件不協同工作,您將無法訪問互聯網或與本地網絡上的其他設備共享該連接。該路由器還提供額外的安全措施,例如防火牆,可以在在線瀏覽或從電子郵件等網站下載文件或從您喜愛的流媒體服務觀看電影時保護您的數據免受惡意攻擊。最後,路由器通常提供額外的功能,例如家長控制,允許您阻止家庭網絡環境中的兒童訪問某些類型的內容。

調製解調器速度

調製解調器的速度以波特率來衡量,它表示每秒可以通過調製解調器傳輸多少位 (bps)。波特率越快,連接速度就越快,使您可以在更短的時間內傳輸更多數據。現代調製解調器的速度範圍從 56kbps(千位每秒)到 1gbps(千兆位每秒)。

它為什麼如此重要?

調製解調器已成為現代通信的重要組成部分,因為它允許我們使用電話線、有線電視網絡或衛星網絡等現有基礎設施將計算機遠距離相互連接。如果沒有調製解調器,我們彼此通信的能力將大大降低,因為沒有調製解調器我們將無法在兩個遙遠的點之間發送數字數據。

不同類型的調製解調器

調製解調器有兩種主要類型:有線和無線。有線調製解調器使用以太網電纜或光纖電纜等電纜將計算機直接連接到彼此以及互聯網。無線調製解調器使用無線電波而不是電纜來將數據從一點傳輸到另一點,而無需在它們之間鋪設物理電線。一些無線調製解調器還具有內置路由器,允許多個設備(例如計算機、智能手機、平板電腦)通過 Wi-Fi 連接同時連接。

為什麼需要調製解調器?

使用計算機時需要調製解調器才能聯網。如果沒有調製解調器,您的計算機或設備就無法通過網絡與另一台計算機或設備進行通信。此外,調製解調器使您的計算機能夠連接到互聯網,以便您可以訪問網站、發送電子郵件以及使用許多其他需要互聯網連接的功能。

購買調製解調器和路由器時要考慮的事項

購買調製解調器和路由器組合包時,請務必考慮以下因素:

速度  –選擇調製解調器/路由器組合包時應考慮連接速度,因為這將決定您在線下載文件或流視頻的速度。

兼容性 –確保您選擇的任何調製解調器/路由器組合包與您的所有設備兼容,以便它們能夠毫無問題地連接。

安全性 –尋找提供防火牆和 VPN 等高級安全功能的軟件包,以便您可以保護自己免受黑客和惡意軟件的侵害。

成本 –在做出決定時,請考慮購買設備的前期成本以及與 ISP 的訂閱費或使用費相關的任何長期成本。

調製解調器是用於將計算機連接到互聯網或其他網絡的重要硬件。通過將計算機的數字信號轉換為可以通過電話線或其他媒體傳輸的模擬信號,調製解調器使我們能夠有效地相互通信,即使我們位於世界各地的不同地點。如果您想保持在線連接,您將需要調製解調器!

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