Minecraft Forums

this thread is for posting how to make logic gates and uses for logic gates.
=switch
=wire
= any block
= red torch
[iron] = air

:!: is a not gate made from



and gate

:!:
[iron]
:!:

OR gate


[iron]


optimised XOR gate thanks to Wervyn

Wervyn

:!:

:!:

more shall be added soon as made

sorry if this was better to put in a different thread such as a water logic gate thread but i thought it deserved its own

NOTE:for all of the torches they are to be put on the side of the blocks

EDIT #1:added or gates
EDIT #2:fixed or gate diagram
EDIT #3&4 added XOR gate and corrected name sorry D:

XOR

for those to lazy to click view full image
http://i1039.photobucket.com/albums/a48 ... ORgate.png
this one is a image because i was to lazy to do it in smilies

also in there is the NAND chip witch is just a and with a not at the end

Wow that is pretty complex. I guess the basic thing to help understand is that a block with a torch on the side of it is an inverter.
This is the greatest addition to minecraft so far. The more things that can be controlled by these the better the game gets.

Also, if you flip a torch on and off really quickly a bit it will burn out and turn off for a second. Pretty cool.

ughhh... I took logic and this still doesn't make much sense to me.

what are some clever ways to utilize these gates?

no clue :biggrin.gif:
some how i dont think much of it will be any use to normal minecraft users
but for people like me we can make binary computers :biggrin.gif:
as im righting this im working on a binary adding ......hmmm what to call it..... ill just go with gate

isn't that exactly what i made?
mine is just 3 NAND gates put together

How do you make the wires.
Does it come with the red torches?

the red "wires" are just the "red stuff" placed on the ground

He is just trying to make it as small as possible.

I just discovered after building your XOR gate that it takes time for the current to travel. Set up a long wire with a door at the beginning and end. The closer door will open before the farther door. Would some sort of clock be possible with this? Maybe we actually could build some kind of computer.

NOR gate

[iron]


NAND gate
:!:
[iron]
:!:

oh i see ty for the optimized gate :biggrin.gif:
ill be quoting that in the main post unless you have any complaints about me doing so

OR gate (smaller than OP)




sand is nothing. tnt is new torch

oh, cool, i had just posted my XOR gate in another thread then i saw this. a full adder should be easy now!

how long before we have fully computerized fortresses?

Alright. I've made a cycle kind of thing:


You flip the switch on the right and then turn it off just as the door at the left side opens. The current should continue to loop forever with no power source. The delay is caused by the inverters. This will switch states about 2 times a second. All the doors along the top open and close in order. If you don't time it perfectly it will get faster and faster and become always on or become slower and turn off.

What could be done with this?
Maybe able to make a "sprint through a tunnel with doors closing behind you" kind of action scene.

or with underground wiring make it look like a ghost is in with or the doors slamming

Well here's a much simpler version of the clock:



This is accurate and will never go out. No lever required. As soon as you complete the circuit it will begin its cycle. I tried making it faster than this (which is about 3-4 ticks per second) but the torches burn out and you have to reset it. The more double NOTs the slower it is.

Just hearing the word flip-flop makes me cringe. I just took digital logic and had the most boring professor ever. I had a project to make a synchronous counter with flip flops, but my partners did most of the work. This is interesting though. Will that rs flip flop definitely work?

Quote from nexekho »

I guess you could make it faster by building a second one and making them fire alternately?

Yeah I thought about doing something like that, but I went for the brute force method of just running a whole bunch at once.

The clock is basically just an odd number of inverters in a loop. With less then 5, the fuses will burn out because it turns them on and off too fast. You can even have a single inverter clock, which just loops back into itself. It's really fast but burns out after a few ticks and it takes a few seconds for the fuse to repair itself. This may have been why Notch made them burn out, so that we can't make stuff happen too quickly or something. But there is a way around it. Here is the max speed clock, it's hard to tell, but it runs at about 10-15 ticks per second:





I dug the trench around it to keep those evil animals away.

I started from the single inverter, but changed it to have 3 fuses instead of one. All of them loop back around to the input. So if one fuse burns out there are still two more to keep the blinking going. The fuses still burnt out to quickly however, so I decided to add another inverter with three fuses. But it needed to be in parallel with the first inverter, otherwise it would increase the delay. I didn't want to run out of wire-energy so I built it above the first one. With 6 fuses to spare there is still a slight stutter randomly every 4-10 seconds. I probably have room to add another parallel inverter for a total of 9 fuses, which would surely run flawlessly.

is it possible to make a loop counter if so you could make accurate, but simple H/M/S clocks, even D/M/Y clocks that would be cool

it would be possible at night to see a 8 thingy (not eletronicly minded) you know the ones they use on alarm clocks