Technology has changed the way we do a lot of things. Sending of mails for example is one good example. Before, it will take days before mail can reach recipients who are thousand of miles away. But things have changed with the advent of the Internet as emails can be send and will be received in just a matter of seconds.
The way we save and share files has changed too. Back in the days when computer was just a new technology, we use floppy disks that can save only kilobytes of files. Now, we can save thousands of Gigabyte of files in media as small as a thumb that can save up to 256 GB of data and more. This device is what we call USB flash drive.