The evolution of hard disk drives

From punch cards to SSDs

16GB Hitachi Microdrive

Microdrives spurred greater innovation in handheld devices, such as Apple's iPod. When the iPod was first released in 2001, it had a 1.8-inch hard drive with 5GB of capacity. By 2006, the iPod was equipped with a microdrive that held 160GB.

Photo courtesy of Hitachi.

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