Fun fact, pascal uses <> for inequality

So does BASIC. It might even be the first, although it's hard to be sure.

BASIC[1] came out in 1964, and Pascal[2] came out in 1970.

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[1] https://en.wikipedia.org/wiki/Dartmouth_BASIC

[2] https://en.wikipedia.org/wiki/Pascal_(programming_language)

Sql too