A high-density 5.25" floppy disk used in early PCs that held 1.2MB of data. See floppy disk.
"1.2M." YourDictionary, n.d. Web. 22 June 2018. <http://www.yourdictionary.com/1-2m>.
1.2M. (n.d.). Retrieved June 22nd, 2018, from http://www.yourdictionary.com/1-2m
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