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English Translations » 【仪表自控交流圈】 » Regarding the interlocking issue

Regarding the interlocking issue

2017-10-10View Original

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This post was last edited by tiandiyi*an on 2017-10-11 07:42. I would like to ask: in interlock logic, what is the difference between those with small circles before and after the “AND” operator and those without such circles?
Reply #22017-10-11
A small circle indicates state inversion, and state inversion means \"not\"; in other words, NOT is connected after AND.
Reply #32017-10-11
The circle in front indicates that inversion is performed first followed by an AND operation, while the circle at the back means that the AND operation is carried out first and then the result is inverted
Reply #42017-10-12
It’s equivalent to adding a NOT gate, which flips 0 to 1 and 1 to 0

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Translated at 2026-07-21 02:44:30

Original: https://bbs.hcbbs.com/thread-1850643-1-1.html

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