The evolution of Hard Disk Drive

The Hard Disk Drive (HDD) is a very important part of any computer where information is stored and retrieved.
Dated back to 1956, the first ever HDD, the so - called 305 RAMAC (Random Access Method of Accounting and Control) was manufactured by IBM which radically revolutionized the way of data storage. This system could store only five MB (equivalent to 2.000 pages of text with 2,500 characters per page) and was a monstrosity - weighed 1 ton with fifty disks of 24 – inch diameter. Moreover, in average, RAMAC’s price/MB was US $10,000. It is unbelievable if comparing with today HDDs’ price.

As the age advanced, the size of the HDDs decreased and storage capacity increased. HDD with 750 GB storage capacity and 3.5 inch diameter storage disk weighs only a few ounces. The price/GB is also very cheap (around 0.37 US$ /GB).

Moreover, HDDs nowadays have not only being used in computers, but also also in consumer electronic devices such as: Cameras, handphones…

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