The first computer disk drive was the IBM 350, released in 1956. It was the size of a small refrigerator and required fifty 24-inch disks to store 3.75 megabytes.
Today, that would be enough to store a few low-quality photos, part of a song file or a few seconds of video. Oh, and it cost $3,200 a month to lease ($26,900 in 2014 money).
Nearly 60 years later, a hard drive that fits comfortably in your hand can hold a million times more information and only costs a few hundred dollars. And if you think that's amazing, then you won't believe what Samsung just unveiled at the 2015 Consumer Electronics Show.