RFC 3092 – Etymology of "Foo" (2001)

Re:RFC 3092 – Etymology of "Foo" (2001) by rast1234 on Monday February 09, 2026 @01:44AM (#46942282)

> It has been plausibly suggested that "foobar" spread among early computer engineers partly because of FUBAR and partly because "foo bar" parses in electronics techspeak as an inverted foo signal.

Can anyone educate me what "inverted foo signal" means here, in connection to electronics?

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Re:RFC 3092 – Etymology of "Foo" (2001) by chordbug on Monday February 09, 2026 @02:57AM (#46942734)

I believe Ā is notation for "not A" and is read out loud as "A bar".

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Re:RFC 3092 – Etymology of "Foo" (2001) by rast1234 on Monday February 09, 2026 @04:56PM (#46952060)

thanks! this makes sense

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