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术语 sector counter
释义 sector counter
扇区计数器
In a magnetic disc unit, a register that is incremented by one as each sector mark is received (as each sector mark passes the sector transducer) and set to zero when the index mark is received (once each revolution). It, thus , always contains the number of the sector that is beneath the read/write heads.
磁盘设备的一个寄存器,每接收一个扇区标志(当每个扇区标志通过扇区传感器时),该寄存 器加一;接收到索引标志时(每旋转一次),则寄存器置零。这样,扇区计数器总含有在读/ 写头之下的扇区号。
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