P60 glider stream AND gate

[ZMan]

First of all, hi to everyone. I've been working in Life (B3/S23) for a while now, and I must say that I havent found any help posts for newcomers, and I've had to examine some of the really big stuff you have created to discover some pretty simple devices. And I don't now whether this AND gate that I made already exists, but I'll post it anyway. Here it is:

Code: Select all

 #CXRLE Pos=-93,-89
x = 106, y = 116, rule = B3/S23
o$b2o$2o28$30bo$31b2o$30b2o13bo2$43bo3bo2$43bobobo2$43bo3bo3$77b2o$77b
o$75bobo$75b2o$45bo$46b2o$45b2o5$59b2o$59b2o12$88bo$87b3o2$49b2o$50b2o
35b3o$49bo$87bobo$87bobo2$87b3o3$87b3o$88bo$53bobo2$53bo3bo33bo2b2o4b
2o2bo$90bo3b3o2b3o3bo$53bobo35bo2b2o4b2o2bo2$53bo3bo2$53bobo4$91b2o$
91bobo$93bo$93b2o4$19b2o$20b2o$19bo13$4b2o$5b2o$4bo! 

It's obviously a simple gate. It's based on the p30 glider duplicator: the A stream is the input stream of the duplicator, and the B stream is the continuous stream; however, I removed the guns to put a second input stream. And an explanation:
-When the A stream input is 1 (the glider is there) and the B stream input is 0 (no glider), the A stream glider passes the block without reacting, then passes the p60 rotator without reacting, too, and is eaten by the eater.
-When the A stream input is 0 and the B stream input is 1, the B stream glider passes the block with no reaction and is quickly eaten by the second eater.
-And when both inputs are 1, the gliders react with the block, the B stream glider is deleted and the A stream glider is displaced by 5 rows to the right - the exact distance necessary so that it is rotated - and goes out.
I set the glider streams so that A=1011 and B=1101; therefore, the output will be 1011 AND 1101= 1001.

[p46beth]

Nice design! I have not seen it anywhere, but it may have been discovered...
It's a lot easier to find collections of p1 logic gates. There was a thread here about p30 circuitry...
http://conwaylife.com/forums/viewtopic.php?f=2&t=243
Here it is!

[calcyman]

Without the output reflector, it is identical to the AND gate discovered by Dieter Leithner.

[ZMan]

Yeah, I thought that it would already be invented... anyway, can you show me that gate? I couldnt make it work without the reflector...

[triller]

.... I've had to examine some of the really big stuff you have created to discover some pretty simple devices.

I for one enjoy these examining forays and have gleaned a significant number of snippets for my toolbox. You can never have enough tools.
It continues to astound me that so very many processes can be implemented in a universe that, at the end of the day, boils down to an existence which is in essence merely boolean.

And speaking of AND gates, at Jason Summer's site
from the jslife.zip file you can download here:

http://entropymine.com/jason/life/#collections

in the 'misc' directory you will find the file 'tubtail'. Here's the RLE:

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#CThe tub w/tail+block eater can function as an AND gate
#C(row 1 and 2): If two gliders arrive, a reflected glider will
#Cbe created. If either glider arrives alone, it will be eaten.
#CRow 3 shows another reflection, but it does not survive
#Cif the southeastward glider arrives alone.
#CDavid Bell, 14 Aug 1999
x = 56, y = 91, rule = B3/S23
5bo39bo$6bo39bo$4b3o8bo19bo8b3o8bo$13b3o17b3o17b3o$12bo19bo19bo$11bobo
17bobo17bobo$12bo19bo19bo3$10boo18boo18boo$boo7boo9boo7boo18boo$obo17b
obo$bbo19bo25$bbo39bo$obo37bobo$boo38boo3$15bo19bo19bo$13b3o17b3o17b3o
$12bo19bo19bo$11bobo17bobo17bobo$12bo19bo19bo$4b3o17b3o$6bo19bo$5bo4b
oo13bo4boo18boo$10boo18boo18boo26$bbo$3bo$b3o4$15bo19bo$13b3o17b3o$12b
o19bo$11bobo17bobo$12bo19bo$4b3o17b3o$6bo19bo$5bo4boo13bo4boo$10boo18b
oo!

Enjoy, and keep examining!
Triller