Today in 1956 IBM unveiled the 305 RAMAC computer. What was most significant about it?

September 12, 2011 By Chad Vander Veen

Answer:

It was the first commercial computer to feature a hard disk drive. The IBM 350 disk storage unit stored about 5 MB of data on 50 24-inch disks. The 305 RAMAC with the 350 leased for $3,200/month.

Image: IBM Archives

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