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A comment on Western Digital is trying to redefine the word “RPM”. Parent comment

Re:Western Digital is trying to redefine the word “RPM” by userbinator on Monday September 07, 2020 @10:07PM (#24404641)
In 1962 an ACM paper referred to a "4K IBM 1401" which had 4000 characters of storage, but in 1964 Amdahl wrote a paper that had 1K meaning 1024.

That's easy to explain, as a 1401 is actually a decimal computer.

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Re:Western Digital is trying to redefine the word “RPM” by throw0101a on Tuesday September 08, 2020 @10:45AM (#24408905)
Further up:

> In the 1950s, "1 kilobit" meant 1000 bits:[9][10]

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