Optical disks: Storage device that can hold 650 megabytes of data .Lasers are used to record and read data on the disk.
Optical disks: Storage device that can hold 650 megabytes of data .Lasers are used to record and read data on the disk.
硬盘:封装有一个或多个的磁盘片的磁盘机.一台硬盘的容量是软盘的多倍.