Magnetic Core Stack, IBM System/360 Model 91

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  • Details
  • Description
Date Introduced
1967 ca.
Photographer
Richards, Mark
Dimensions
3 x 8 x 5 1/2 in.
Manufacturer
International Business Machines Corporation (IBM)
Copyright Owner
© Mark Richards
Location
United States
Keywords
Stack processing; Storage; Memory
Object ID
102653118

The fastest of the early 360s, the Model 91 had a 60 nanosecond cycle time and used both parallelism and pipelining. Only 15 were built. The first, for NASA, had 2 megabytes of core memory in stacks like this.