write read head

基本解釋

The mechanical device that moves something, usually read/write head.
一種機械裝置，用于移動諸如讀寫磁頭之類的部件。
In relation to computers, the term is applied to a read/write head, to detector of sector marks in a magnetic disc system, and to electronic/sonic pulse converters of delay line memory.
在與電腦有關(guān)時，這個術(shù)語用在磁片系統(tǒng)中的讀／寫磁頭、扇面標(biāo)記的檢測上，以及用在延遲線記憶體的電子或聲波脈沖變換器上。
In relation to computers, the term is applied to a read/write head, to detector of sector marks in a magnetic disc system, and to electronic/sonic pulse converters of delay line memory.
把能量從一種形式轉(zhuǎn)換成另一種形式的裝置。在與計算機有關(guān)時，這個術(shù)語用在磁盤系統(tǒng)中的讀／寫磁頭、扇面標(biāo)記的檢測上，以及用在延遲線存儲器的電子或聲波脈沖變換器上。

Now, if the current is sent one way through the read/write head the area is polarized in one direction.
如果當(dāng)前通過讀寫頭來發(fā)送指向一個方向的信息,這個區(qū)域的磁極指向某個方向。
哈佛公開課 - 計算機科學(xué)課程節(jié)選
So as the particles on the disk that get the current in the read/write head moving put together millions of these magnetized segments and you've got a file.
通過讀寫頭你就可以得到每個粒子的極性,如果把這些上百萬粒子的信息,匯聚要一起就夠成了一個文件。
哈佛公開課 - 計算機科學(xué)課程節(jié)選
When a brief pulse of electricity is sent to the read/write head it flips on a tiny electromagnet for a fraction of a second.
當(dāng)一個簡單的電脈沖被送到讀寫頭,它會短時間內(nèi)出現(xiàn)一個小的電磁。
哈佛公開課 - 計算機科學(xué)課程節(jié)選

One challenge would involve creating a magnetic head that could hover over those dots, read their signal and write new data onto the grid.
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