磁盤讀寫頭,簡稱磁頭,是碟盤存儲的結構中的一部分,負責讀取與寫入數據至磁盤。從磁盤中讀取數據時,它會在磁盤上方浮動,並將盤片的磁場轉換為電流,將數據從磁盤中取出。而寫入時則是電流轉換為磁場,將數據存入磁盤[1][2][3]。多年來它己經過許多次更新迭代[4][5][6]

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機械硬盤磁頭(正視)
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機械硬盤磁頭(側視)
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硬盤磁頭的顯微鏡放大圖
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一塊浮於硬盤上的磁盤讀寫頭
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磁頭讀寫數據的示意圖

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