ETH 2006 Half adder

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'''Illustration of the above concepts: ''' [[media:Half-adder.pdf|sliles]] (pdf, 352KB), [[media:Half-adder-handout.pdf|handout]] (pdf, 268KB)
'''Illustration of the above concepts: ''' [[media:Half-adder.pdf|sliles]] (pdf, 352KB), [[media:Half-adder-handout.pdf|handout]] (pdf, 268KB)
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back to [[ETH Zurich 2006|ETH 2006 Main Page]] or to [[ETH 2006 Ideas|other project ideas]]
back to [[ETH Zurich 2006|ETH 2006 Main Page]] or to [[ETH 2006 Ideas|other project ideas]]

Revision as of 15:14, 28 July 2006

Half-adder or Full-adder

An implementation of a half-adder or full-adder: 1-bit adder with carry

  • [http://en.wikipedia.org/wiki/Full_adder half/full adder in wikipedia]

Idea: Pattern recognition

Main Goal:

  • Write something with a chemical on a petri plate (like ETH for example)
  • Let Bacteria grow uniformly on the plate
  • Expose the plate to a picture (black and white) of the same pattern
  • Result:
    • Bacteria gets green when pattern on the plate and picture match (light and chemical)
    • Bacteria does not express fluorescent protein when pattern on the plate and picture match (no light and no chemical)
    • Bacteria gets red when pattern on the plate and picture do not match

Implementation from the ingenieur point of view

  • Half Adder
  • = opportunity to build an AND and an XOR Gate

Implementation from the biologist point of view

  • AND Gate: presence of chemical induces the production of an inactive protein, which is activated by a second protein (produced when light is present): the first protein is then activating GFP production
  • XOR Gate: I think Marko had a good idea about that (I didn't really got it)
  • a light sensible promoter (there are some)
  • a chemical sensible promoter (chemical to be defined)
  • we would need to give a kind of first signal to the system (to don't have light reactions before a certain moment, otherwise we have to work in a dark room...), an activation signal after the bacterias have grown on the plate

Illustration of the above concepts: sliles (pdf, 352KB), handout (pdf, 268KB)



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