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Images: 60 years of IBM innovation

by ZDNet Author  |  July 20, 2006 2:50pm PDT  |  Image 1 of 8

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Hard drives
Invented in 1955 and announced in 1956, the hard drive for data storage was developed in San Jose, Calif., by IBM. The 305 Random Access Method of Accounting and Control (RAMAC) offered unprecedented performance by permitting random access to any of the 5 million bytes of data stored on both sides of 50 two-foot-diameter disks. Now, you can't even buy an MP3 player with that little memory.

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