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The Jargon File, version 4.4.8 (jargon)

foobar: n. [very common] Another widely used
metasyntactic variable; see foo for etymology.
Probably originally propagated through DECsystem manuals by Digital
Equipment Corporation (DEC) in 1960s and early
1970s; confirmed sightings there go back to 1972. Hackers do
not generally use this to mean
FUBAR in either the slang or jargon sense. See also
Fred Foobar. In RFC1639, “FOOBAR” was
made an abbreviation for “FTP Operation Over Big Address
Records”, but this was an obvious backronym.
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; if a digital signal is active low (so a negative or zero-voltage
condition represents a "1") then a horizontal bar is commonly placed over
the signal label.

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單詞	字典	翻譯
FOOBAR	查看　FOOBAR　在Google字典中的解釋	Google英翻中〔查看〕
FOOBAR	查看　FOOBAR　在Yahoo字典中的解釋	Yahoo英翻中〔查看〕