A rigid magnetic disk mounted permanently in a drive unit. 永久地安装在驱动程序中的硬磁盘。
Typically, your computer will need a CPU, a RAM, a hard disk, a floppy disk drive, a CD-ROM drive, a main board or motherboard in your system unit. 典型的,你的计算机将会需要机箱里安装一个中央处理器,一个随机存储器,一个硬盘,一个软驱,一个光驱和一个主板。
A stand alone disk drive that reads and writes data on rigid disks and can is attached to a port on the system unit. 一种读、写硬磁盘上数据的独立的磁盘机,可以连接在系统设备端口上。
SSD ( Solid State Disk or Solid State Drive ), also known as electronic hard disk or solid-state electronics, solid state by the control unit and memory unit ( DRAM or FLASH chip ) composed of the hard disk. 固态硬盘(SolidStateDisk或SolidStateDrive),也称作电子硬盘或者固态电子盘,是由控制单元和固态存储单元(DRAM或FLASH芯片)组成的硬盘。