Wednesday, June 24, 2009

First Hard Disk

This image is a Harddisk IBM first launched in September 1956 with the title 305 RAMAC.
Hard disk storage capacity of 5 Mb and is the first by using the Computer hard disk drive. The weight disk is more than 2000 lbs.

IBM 305 RAMAC (Random Access Method of Accounting and Control) 1956
1. Capacity: 4.8 MB
2. rotation speed: 1200 rpm
3. Rent Price: $ 3200 per month (1957)
4. User's first business: Chrysler's MOPAR Division (1,957)
5. The number of units that have been produced: more than 1000 units to 1961.


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