现在,计算机软件和存储的文件越来越大,动不动就几兆、几十兆,两台计算机之间数据交换成了一件麻烦事:用软盘,先压缩,再拷贝到一堆软盘上,速度又慢,又不方便,不幸的是有一张软盘损坏,就要重新再来:用Zip等大容量的驱动器,速度提高了,但是价格比较昂贵,还要两个机器都安装了驱动器,不然要卸下驱动器随身携带;要不然就把硬盘拆下,安 Now that computer software and stored files are getting bigger and bigger, there are several megabytes and tens of megabits at a time, and data exchange between two computers becomes a hassle: with a floppy disk, compress it first and then copy it to a bunch of floppy disks, Slow and inconvenient, but unfortunately there is a floppy disk damage, we must start again: With Zip and other large-capacity drives, speed increased, but the price is more expensive, but also installed a drive on both machines, or else Remove the drive to carry; otherwise, remove the hard drive, safety