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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