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The XOR Gate - Explained
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Tags: Button, Weighted Cube, Flip Panel, Angled Panel, Laser Emitter, Glass, Laser Relay
File Size
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6.153 MB
26 Jul, 2012 @ 7:41am
12 Aug, 2012 @ 8:13am
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N-Sunderland
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The XOR Gate - Explained

In 1 collection by N-Sunderland
Complex Contraptions
18 items
Description
When making more complex mechanisms in Portal, any good test chamber designer will use logic gates: OR, NOT, AND... It seems, however, that the XOR gate tends to give some people trouble. That's understandable; its behaviour is more intricate than any of the other logic gates. This chamber starts out by demonstrating the basic functionality of an XOR gate, before progressively moving on to the most compact (and most used) design.
8 Comments
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GrottoLova 14 Feb, 2023 @ 2:55pm 
Wow... 10+ years this has been on the workshop. Fun find
cyron43 14 Aug, 2012 @ 7:07am 
Well done. :-)
N-Sunderland  [author] 12 Aug, 2012 @ 8:13am 
EDIT: I've replaced the old outputs with doors, thanks to BeeMod.
N-Sunderland  [author] 29 Jul, 2012 @ 9:53am 
MAJOR UPDATE: I've upgraded the chamber. Instead of a single demonstration of one type of XOR gate, it now gives a detailed guide on how to make a compact 1x1x1 gate.
shane716 28 Jul, 2012 @ 10:50am 
yup you are right.. the size is not a big deal and your way is easier to understand
N-Sunderland  [author] 28 Jul, 2012 @ 7:03am 
@Geneosis: Thank you :)

@shane716: Yeah, this isn't the most compact of designs, but that wasn't really the point. This is designed to be efficient in terms of number of entities, and to be simple to understand for beginners. And really, the size won't make much of a difference anyways.
Geneosis 28 Jul, 2012 @ 5:26am 
I think this one is the best in terms of number of laser devices you need to make it ^^ Will add it to the Map Creator Tools collection ;)
shane716 26 Jul, 2012 @ 8:46am 
Looks cool, but comparing with the https://developer.valvesoftware.com/wiki/Portal_2_Puzzle_Maker/Logic_Gates#XOR_gate
you XOR gate seems to need more space.