In 1965, Intel co-founder Gordon Moore noted that when it came to data storage, the number of transistors placed in an integrated circuit seemed to double every two years or so. Well, let's all give a moment of thanks that he was (mostly) right. The first hard drive (pictured to the right) was the size of two refrigerators and cost the equivalent of more than $400,000 in today's dollars. Oh, and it held a measly 5 megabytes of data. Now, many of us carry iPhones with up to 64 gigabytes (65536 megabytes).

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