Shipped in September 1956, the first 5MB hard disk unit weighed over a ton (approximately 2,200 pounds) and was used in the IBM 305 RAMAC, the first commercial computer to feature a moving-head ...

The first commercial hard disk drive was introduced in 1956 as part of the IBM 305 RAMAC (Random Access Method of Accounting and Control) system, featuring the IBM Model 350 disk storage unit (US ...

Below is a chart showing ACN's trailing twelve month trading history, with the $305 strike highlighted in orange: And International Business Machines Corp (Symbol: IBM) options are showing a ...

As of 17 March at 9:53:52 am GMT-4. Market open. Adjusted closing price adjusted for splits and dividend and/or capital gain distributions.

Garvin, David A. "Emerging Business Opportunities at IBM (TN) (A), (B), and (C)." Harvard Business School Teaching Note 305-023, August 2004. (Revised August 2004.) ...