Magnetic drum memory Invented all the way back in 1932 (in Austria), it was widely used in the 1950s and 60s as the main working memory of computers. | Forum for Electronics
![Magnetic Drum Memory, c. 1951, ≈256 bytes/in², University of Auckland | Computer history, Old computers, Vintage electronics Magnetic Drum Memory, c. 1951, ≈256 bytes/in², University of Auckland | Computer history, Old computers, Vintage electronics](https://i.pinimg.com/originals/08/b3/92/08b392d3814522af2ff28d6185dc0836.jpg)
Magnetic Drum Memory, c. 1951, ≈256 bytes/in², University of Auckland | Computer history, Old computers, Vintage electronics
![Huge Magnetic Drum Computer Memory at the Living Computer Museum Editorial Image - Image of electronic, gold: 128533880 Huge Magnetic Drum Computer Memory at the Living Computer Museum Editorial Image - Image of electronic, gold: 128533880](https://thumbs.dreamstime.com/z/huge-magnetic-drum-computer-memory-living-computer-museum-huge-vermont-research-magnetic-drum-computer-memory-living-128533880.jpg)