# what does NC mean? **URL:** \ **Category:** Interfacing\ **Created:** [January 1, 2010, 6:32pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636 "2010-01-01T18:32:10Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 1, 2010, 6:32pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/1 "2010-01-01T18:32:10Z")
i am using the following line sensor: [http://robosoftsystems.co.in/roboshop/index.php/grid-solving-sensor-module-digital-output-designed-for-nexus-competitions.html](http://robosoftsystems.co.in/roboshop/index.php/grid-solving-sensor-module-digital-output-designed-for-nexus-competitions.html) here is the data sheet: [http://www.robosoftsystems.co.in/roboshop/media/catalog/product/pdf/TCRT\_Digital.pdf](http://www.robosoftsystems.co.in/roboshop/media/catalog/product/pdf/TCRT_Digital.pdf) pin no 8 is designated NC.. whats that mean any idea? ---
**Author:** ![retrolefty](https://avatars.discourse-cdn.com/v4/letter/r/dec6dc/32.png) [@retrolefty](https://forum.arduino.cc/u/retrolefty)\ **Post date:** [January 1, 2010, 6:35pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/2 "2010-01-01T18:35:53Z")
NC = No Connection. It means there is nothing wired to that pin. Lefty ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 1, 2010, 6:37pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/3 "2010-01-01T18:37:50Z")
thnx a lot man ---
**Author:** ![mowcius](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@mowcius](https://forum.arduino.cc/u/mowcius)\ **Post date:** [January 1, 2010, 8:53pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/4 "2010-01-01T20:53:17Z")
Thrilling answer wasn't it! ;D I bet you thought it was the most useful pin in the world! Mowcius ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 2, 2010, 4:07pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/5 "2010-01-02T16:07:27Z")
its not his fault.. my question was noobest..sry bout that 😛 ---
**Author:** ![mowcius](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@mowcius](https://forum.arduino.cc/u/mowcius)\ **Post date:** [January 2, 2010, 4:15pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/6 "2010-01-02T16:15:00Z")
> its not his fault.. my question was noobest..sry bout that I wasn't saying it was anyone's fault. I just thought it was funny was all 😉 This time last year I would have not known that either. We all have to learn at some point! 🙂 [smiley=beer.gif]Beer? Mowcius ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 3, 2010, 6:02pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/7 "2010-01-03T18:02:15Z")
thx a lot ppl.. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 11, 2010, 12:00am UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/8 "2010-01-11T00:00:15Z")
Until now, I thought it meant something like «Not Communicated». It explains a lot 😃 ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 6, 2021, 7:04pm UTC](https://forum.arduino.cc/t/what-does-nc-mean/15636/9 "2021-05-06T19:04:22Z")