So, despite not really knowing how to play the piano and not knowing how to read or write music, Cicoria got himself a piano and promptly began to play everything he heard in his head.

于是，尽管实际上不知道该如何弹钢琴，也不知道如何读写乐谱，西科里拉还是给自己买了一台钢琴，并且立即开始弹奏脑子里听到的一切。

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A simulated three dimensional thin film head field was utilized in the write process and a giant-magnetoresistive (GMR) head was used in the read process.

在写入过程中采用了模拟的三维薄膜磁头，在读出过程中用的是巨磁阻(GMR)磁头。

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As the head can be used to read and write messages quickly hopes of finding any point on the disk, so you can access information on the disk directly.

由于用来读写信息的磁头能很快地寻到磁盘上的任何一点，因此，磁盘上信息的存取可以直接进行。

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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.

通过读写头你就可以得到每个粒子的极性,如果把这些上百万粒子的信息,汇聚要一起就够成了一个文件。

哈佛公开课 - 计算机科学课程节选

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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