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UC Berkeley CDC 6400 -Memories

"Checkmate!"
The UCB CDC 6400's last words
playing chess with Roger Johnson.

Working parts removed after final shutdown in August 1982.
Click on icon pictures for full size.
Wikipedia on Core Memory 
UC Berkeley CDC 6400 History

UCB CDC6400 System Diagram
UCB CDC 6400
System Diagram
CPU/PPU Core Memory Module 4k X 12 bits
CPU / PPU Core
Memory Module
4k x 12 bits
7" x 7" x 4"
CPU/PPU Core Memory Module Reverse
CPU / PPU Core
Memory Module
4k x 12 bits
Reverse
Card Punch Core Memory
Card Punch Core Memory
2 x 40 x 12 bits
Extended Core Storage (ECS)
Extended Core Storage
Inside 6634
CPU/PPU Core Memory Plane
CPU / PPU Core
Memory Plane
4k x 1 bit
4" x 4"
CPU/PPU Memory Cores Close-up
CPU / PPU Memory Cores
1 bit each
0.2" x 0.2"
Card Punch Memory Cores
Card Punch Memory Cores
1 bit each
0.2" x 0.2"

Page modified: 09 Feb 2014 14:51:38 -0800

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