A history of data

The IBM RAMAC 350

Developed in 1956, the IBM RAMAC 350 was the first computer to have a magnetic disk drive similar to those used today. It weighed 1 tonne (1 ton) and had  50 disks that stored a total of 5 MB of data. That’s around the file size of one  high-resolution jpeg photo. Today, people can carry gigabytes of data in their pockets on their cell phones.

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