![IBM on Twitter: "In Sept. 1956, IBM announced the world's first hard disk drive, used by the IBM 305 RAMAC pictured here: http://t.co/mPXYmJBpOS" / Twitter IBM on Twitter: "In Sept. 1956, IBM announced the world's first hard disk drive, used by the IBM 305 RAMAC pictured here: http://t.co/mPXYmJBpOS" / Twitter](https://pbs.twimg.com/media/BUDnRwMCYAEbQ5P.jpg)
IBM on Twitter: "In Sept. 1956, IBM announced the world's first hard disk drive, used by the IBM 305 RAMAC pictured here: http://t.co/mPXYmJBpOS" / Twitter
PMGDISHA al Twitter: "In 1958, @IBM 305 RAMAC was the first computer with a Hard Disk Drive (HDD) in 1958. It stored 3.75 MB. #DigitalEvolution #PMGDISHA #DigitalIndia https://t.co/Iesq0HstU8" / Twitter
![1: The first hard disk drive, called RAMAC and introduced by IBM in... | Download Scientific Diagram 1: The first hard disk drive, called RAMAC and introduced by IBM in... | Download Scientific Diagram](https://www.researchgate.net/publication/272491811/figure/fig1/AS:652604665262080@1532604485307/The-first-hard-disk-drive-called-RAMAC-and-introduced-by-IBM-in-1956-The-drive.png)