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hiperativo77 Says:

Jan 8, 2009 - awesome !!!!

ALAPAT1 Says:

Jan 28, 2009 - how would you do a xor gate?

mlittman Says:

Jan 28, 2009 - a xor b = (a and not b) or (not a and b)... so, it would be a lot bigger, but it can be made out of the same pieces.

GTXT1025 Says:

Feb 14, 2009 - i cannot und?????

Filomatia Says:

Feb 20, 2009 - Cool! But it has a problem: allows to input 1 and 0 simutaniously to the same variable.

mlittman Says:

Feb 20, 2009 - True, but I'm not sure it's a problem. We'd just build the "keyboard" to only transmit one signal. (Consider that standard electronics have similar problems like allowing a meaningless voltage.)

OmegaB33f Says:

Mar 12, 2009 - lol

SciGuy16 Says:

Apr 10, 2009 - Also, if you think this video sucks, I suggest checking your spelling!

Ellandroadboy Says:

May 8, 2009 - wat?????????

PWOPLW Says:

May 26, 2009 - Cool demonstration. Make a CLA adder! ^.^

ienjoytaffy Says:

May 28, 2009 - lol

pohoy1 Says:

Jun 3, 2009 - well i just wasted 2:37 of my life

nerf1212 Says:

Jun 3, 2009 - yup mine to.

perli55 Says:

Jun 17, 2009 - very cool

IllegalMavamaarten Says:

Jun 23, 2009 - cool xD

austy108642 Says:

Jun 24, 2009 - Wow :). Makes me want to take my Digital Electronics class in high school again.

MMMMTOASTY Says:

Jun 26, 2009 - great, now all I can think of is 0 and 1.

weylin6 Says:

Jul 2, 2009 - do XOR

mlittman Says:

Jul 2, 2009 - a xor b is just (a or b) and not (a and b), so with a bunch more legos, all the pieces we described should fit together just fine!

syrop26 Says:

Jul 6, 2009 - Gosh, this video is brilliant!

knabbers Says:

Jul 30, 2009 - that is really cool mustve taken ages to find ways to do that =] 5 stars

BrendanTSugrue Says:

Sep 3, 2009 - I second that.

douro20 Says:

Oct 13, 2009 - How about Exclusive OR, whose state is 1 if and only if one and only one of its inputs is 1.

mlittman Says:

Oct 13, 2009 - it would take a bunch more bricks, but a xor b = (not(a) and b) or (a and not(b)). So, xor can be made by gluing together the pieces in the video.

ShootAtGameOver Says:

Nov 18, 2009 - Maybe Mr. Littman doesn't know anything about XOR gates. I suppose his interest is about only TOYS:) So try to use barbie girls for XOR gates. No way-this will help you