There are three symbols for the NOT gate:= = = Paul Breitner = = =
ð ɛ ɹ ɑ ɹ WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY s ɪ m b ə l z WORD_BOUNDARY f ə ɹ ð ə WORD_BOUNDARY n ɑ t WORD_BOUNDARY ɡ eɪ t WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY p ɔ l WORD_BOUNDARY b ɹ eɪ t n ə ɹ WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY