![A new IBM computer, the 6400 magnetic ledger accounting machine. It uses ledger cards that have a magnetic stripe that stores Stock Photo - Alamy A new IBM computer, the 6400 magnetic ledger accounting machine. It uses ledger cards that have a magnetic stripe that stores Stock Photo - Alamy](https://c8.alamy.com/comp/D18J43/a-new-ibm-computer-the-6400-magnetic-ledger-accounting-machine-it-D18J43.jpg)
A new IBM computer, the 6400 magnetic ledger accounting machine. It uses ledger cards that have a magnetic stripe that stores Stock Photo - Alamy
![View of IBM digital computer model 7090 magnet core installation. ITT Artic Services, Inc., Official photograph BMEWS Site II, Clear, AK, by unknown photographer, 17 September 1965. Clear Air Force Station, Ballistic View of IBM digital computer model 7090 magnet core installation. ITT Artic Services, Inc., Official photograph BMEWS Site II, Clear, AK, by unknown photographer, 17 September 1965. Clear Air Force Station, Ballistic](https://c8.alamy.com/comp/E1GK67/view-of-ibm-digital-computer-model-7090-magnet-core-installation-itt-E1GK67.jpg)
View of IBM digital computer model 7090 magnet core installation. ITT Artic Services, Inc., Official photograph BMEWS Site II, Clear, AK, by unknown photographer, 17 September 1965. Clear Air Force Station, Ballistic
MIT IS&T on Twitter: "If you like classic magnetic tape drives, then you'll love this pic of these @IBM 3420 drives (along with other classic computer hardware) taken in @MIT's building W91
![IBM Sets New Record for Magnetic Tape Storage; Makes Tape Competitive for Cloud Storage - DATAVERSITY IBM Sets New Record for Magnetic Tape Storage; Makes Tape Competitive for Cloud Storage - DATAVERSITY](https://dv-website.s3.amazonaws.com/uploads/2017/08/ib.png)