Computer History Museum
Magnetic core memory stack
A large early magnetic core memory unit. Machine is unknown but see curator's comments.
- Type
- Physical Object
- Catalogue number
- 102618519
Magnetic core memory stack
Large core stack red and white wires on one side, black and yellow on the other and yellow on the end. Some wires have numbers. This core stack has 35 core planes. It appears that one plane was removed from the stack This implies the stack was used to implement a 36 bit wide memory system. The number of bits in each core plane was not counted, so the capacity or number of words in the stack is not known.
- Type
- Physical Object
- Catalogue number
- 102618520
Magnetic core plane
Small board with PCB cover screwed down to main board. I presume the cover protects magnetic core memory, but it is not visible.
- Type
- Physical Object
- Catalogue number
- 102618521
Magnetostrictive wire delay line
Wire delay line with everything easily visible. No indication if it was ever in a protective covering or box.
- Type
- Physical Object
- Catalogue number
- 102618523
Magnetic core memory plane, Electronic Memories, 18K x 18
Core plane with very small cores visible under a plastic encasement obviously put there during manufacture.
- Type
- Physical Object
- Catalogue number
- 102618524
Magnetic core memory
Magneitc core plane stack - appears to be hand made. Each core plane appears to be about 16 x 32 cores and 7 planes in the stack.
- Type
- Physical Object
- Catalogue number
- 102618525
Transformer Read only Storage (TROS) Module
Module of the type reportedly used in IBM System/360 Model 20 and Model 40 computers. Display board from old museum exhibit.
- Type
- Physical Object
- Catalogue number
- 102618526
UNIVAC Magnetic Core Memory
Magnetic core unit from a UNIVAC computer (no indication of which model). This was an internal unit that has been unbolted from its support. The core is divied into two sections with electronics between. Cores are not visible as they are encased in black boxes.
- Type
- Physical Object
- Catalogue number
- 102618527
Magnetic core memory, Ampex
Core memory module. Cores are not visible as they are inside the 5 layer assembly .
- Type
- Physical Object
- Catalogue number
- 102618528
Magnetic core memory, Ampex
Core memory lug in unit - cores are not visible as they are internal to the 4 layers.
- Type
- Physical Object
- Catalogue number
- 102618529
Commodore 8050 floppy disk drive, dual drives
- Type
- Physical Object
- Catalogue number
- 102620000
Dynamic Ram 32K memory card
<p>A 32 K Dynamic RAM memory card - perhaps from a Jupiter computer? - with memory chips on one side and multi-colored wire wrap connections on the other.</p>
- Type
- Physical Object
- Catalogue number
- 102620879
Data General Nova Core Memory plane - 16K
Core memory stack (16K) from a Data General Nova.
- Type
- Physical Object
- Catalogue number
- 102620880
Magnetic core memory plane
(IBM?) core memory plane.
- Type
- Physical Object
- Catalogue number
- 102620881
CDC 7600 large Core Memory (LCM)
Large core memory (LCM) for the 7600. Consists of two units, an upper and a lower unit.
- Type
- Physical Object
- Catalogue number
- 102620882
Magnetic core memory unit
Large unit built into a pull out component on drawer glides. Core memory is a small part in the middle, the rest is taken up by power and other electronic components
- Type
- Physical Object
- Catalogue number
- 102620883
Magnetic rod memory
One plane of magnetic rod memory. Magnetic rods were similar in operation to magnetic cores. The major use was by NCR on their 315 computer, but there is not indication of manufacturer or machine other than one of the numbers stamped into the plastic is "315".
- Type
- Physical Object
- Catalogue number
- 102620884
CDC computer memory, 94200, 16x 36 (Magnetic core ?)
See entry for accession number 102620886 (there are 6 of these units).
- Type
- Physical Object
- Catalogue number
- 102620886
CDC computer memory, 94200, 16x 36 (Magnetic core ?)
see accesssion number 102620885.
- Type
- Physical Object
- Catalogue number
- 102620887
CDC computer memory, 94200, 16x 36 (Magnetic core ?)
see accession number 102620885
- Type
- Physical Object
- Catalogue number
- 102620888
