[islandlabs] Tonights Meeting

Jonathan Dahan jedahan at gmail.com
Wed Jan 26 22:14:51 UTC 2011


we will be meeting tonight. cool 555 stuff!

- Jonathan


On Wed, Jan 26, 2011 at 2:38 PM, Burns, William <burns at cshl.edu> wrote:

> I saw that today's planetarium outing was cancelled.
> I assume that means that the StonyBrook meeting is back on (and hopefully
> Jonathan confirms that) but I can't make it today, so have fun everyone.
>
> Here's something to think about though:
> http://www.555contest.com/
> Joe's intervalometer design would be a good entry.
> FYI: the worlds most useless device is also 555 based.
> Any other ideas?
>
> If we want to get super-aggressive:
> It'd be super-cool to build a primitive (4-bit?) CPU from scratch.
> The 555 would be the sytem clock. We'd need it to drive a counter. (the
> program counter)
> Then there would have to be a memory bus...
> Is this possible for us? I don't know. Very very cool though.
>
> -Bill
>
>
> Interview with the inventor of the 555.
>
> http://semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenzind_Index.htm
> http://www.youtube.com/watch?v=j3vpu67uu28
> http://www.youtube.com/watch?v=4rRf1V70eHE
>
> 555 Application notes:
>
> http://people.clarkson.edu/~tortmeye/ee211/labview%20files/The%20555%20Timer%20Chip%20Astable%20Circuit.doc
>
> Other 4-bit CPUs:
> http://www.youtube.com/watch?v=xISG4nGTQYE
> http://www.galacticelectronics.com/Simple4BitCPU.HTML
> http://hackaday.com/2010/06/08/duo-128-elite-4-bit-cpu/
> http://en.wikipedia.org/wiki/Intel_4004
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeculture.org/pipermail/list/attachments/20110126/d5b39b01/attachment.html>


More information about the List mailing list