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Actually, no :-) The 650 had a drum for main storage. The "355 Random Access Memory" was something different, an optional hard drive peripheral, which IBM liter
by kens 1y ago
Actually, no :-) The 650 had a drum for main storage. The "355 Random Access Memory" was something different, an optional hard drive peripheral, which IBM literally called "RAM" (see the link above). This became the RAMAC system.
- Animats 1y agoRight, you could add a RAMAC disk, but that was a very expensive option. Many universities had IBM 650s, but usually without the RAMAC.