Second (Yes) Application for build trial!

[RedMiner]

I failed the first one.
Here it is:

Code:

Minecraft name: 2Miners2013
What do you like the most about redstone?: It allows me to simulate real world computation in a virtual world, and it is also fun to learn.
What's a thing you have made which demonstrates redstone knowledge?: I have built an ALU.
What does it do?: It processes numbers with certain logical or arithmetic operations.
Image and/or video, from imgur.com or youtube.com: http://imgur.com/a/Y9vRP
What do you plan on making for your build trial?: I plan on making a 4 bit RCA alu (yes, again i know but its easier for me.)
Do you agree with the rules?: Yes, I agree to follow the rules.

[mazsolaskuglof]

You don't have to reapply if you failed your first trial. Just ask a staff member for assistance and make sure to be more prepared than the previous time and/or build something more advanced to better convince them.

[RedMiner]

Alright. Anyone open to trial me?