Disk operating system (DOS) is a program that controls the transfer of data to and from a hard or floppy disk, frequently combined with the main operating system.
磁盘操作系统是一种控制计算机与磁盘或软盘之间数据相互传送的程序。通常与主操作系统结合在一起。
This lesson will teach the disk operating system-DOS.
本期为第二讲，讲授磁盘操作系统——DOS。
This lesson will teach the disk operating system-DOS.
本期为第二讲，讲授磁盘操作系统——DOS。
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