The 305 was a character-oriented variable "word" length decimal (BCD) computer with a drum memory rotating at 6000 RPM that held 3200 alphanumeric characters. A core memory buffer …

The IBM 305 RAMAC — or simply RAMAC — was the first computer to use a random-access disk drive. The progenitor of all hard disk drives created since, it made it possible for any computer …

The IBM 350 disk storage unit, the first disk drive, was announced by IBM as a component of the IBM 305 RAMAC computer system on September 14, 1956. [8][9][10][11] Simultaneously a …

On September 14, 1956, at IBM's Glendale Laboratory in Endicott, New York, IBM demonstrated the 305 RAMAC (R andom A ccess M ethod of A ccounting and C ontrol) Magnetic Drum Data …

The first 350 C disk file became a commercially available product on September 4, 1956, and was a key component of the IBM 305 RAMAC system, which also included a central processor, …

The IBM 305 RAMAC was the first commercial computer that used a moving-head hard disk drive (magnetic disk storage) for secondary storage. The system was publicly announced on …

Jan 3, 2014 · This seminal hard drive was part of a larger machine known as the IBM 305 RAMAC, short for "Random Access Method of Accounting and Control," and in the classic …

Dec 26, 2011 · In September 1956, IBM launched the 305 RAMAC (Random Access Method of Accounting and Control), the first commercial computer that used a moving-head hard disk …

Sep 13, 2019 · Weighing in at more than a ton and storing 5MB of data, the IBM 305 RAMAC was the first supercomputer with a hard disk drive (HDD). Introduced by IBM on September 13, …

Jan 10, 2013 · From the bitsavers.org collection, a scanned-in computer-related document. Reviews cannot be added to this item.