Revision as of 07:00, 11 November 2011

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Science Festival 2011 Science Festivel 2011
Type of Event:	Event
From:	2011/11/10 08:00:00 AM
Till:	2011/11/13 07:00:00 PM
Recurring:	no
Organizer:	mnhn
Cost:	0 EUR0 $ 0 £ 0 CHF
Mandatory registration:
Attendees:	Nick17, Kwisatz, Lala Log-in to RSVP
Contact Person(s):	Gunstick (mail)
Keywords:
Location
Where:	MNHN, Luxembourg (25, rue Münster, L-2160 Luxembourg, Luxembourg)
Map:	Loading map... {"minzoom":false,"mappingservice":"openlayers","geoservice":"google","maxzoom":false,"width":"250px","height":"250px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"wmsoverlay":false,"copycoords":false,"static":false,"zoom":13,"controls":["layerswitcher","mouseposition","autopanzoom","scaleline","navigation"],"layers":["new OpenLayers.Layer.OSM.Mapnik(\"OSM Mapnik\")","new OpenLayers.Layer.OSM.CycleMap(\"OSM Cycle Map\")"],"resizable":false,"overlays":[],"searchmarkers":"","locations":[],"imageoverlays":null}
Tools
QrCode:
Add to your calendar:	Download … further results
Alternate picture:	None
Announce globally:	no

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Participants

Fill in this table to tell your participation.

Logic gates

See also the wikipedia article on adders

Same logic, a bit rearranges and replaced the first full adder with a half adder. Note that the carry dost not really need to be connected completely to the left.

Lego

• full adder built from Lego
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  LegoFullAdderWithDispl...
  

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  LegoHalfAdderBits.jpg
  

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  LegoHalfAdderCarry.jpg
  

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  LegoOrGate.jpg
  

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  LegoDigitalAnalogConve...
  

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  LegoDisplayUnit.jpg
  

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  LegoFullAdderView.jpg
  

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  LegoFullAdderActionInp...
  

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  LegoFullAdderActionRes...
  

Copper

Half adder built out of copper. The marbles replace the fingers pushing the buttons of the Lego version. The marbles will propagate the bit flow to the next logic gates. In the middle you can see the XOR-AND mechanical combination as known from the Lego version which does the logic. The marbles flowing into the input are "lost", like in a real logic circuit. And new marbles are released at the bottom depending on the logic decision.

Copper Model

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• Production
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• Final Model
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Photos

• bend-a-thon
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Almost finished: first calculation ever. Switch on annotations to see some more info

Running only the clock

Only the overflow track

Final version, before packaging for delivery to science festival

Box built

Ready for shipping

Artist's view