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.
Specifications:
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)
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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