Multi-Function Logic Gate

[DaKaz1990]

now some xor, toggle, and pulsar capability and that thing would be the shiz

[iammrhellohowareyou]

Nice! woulnt this be like an 4 bit logic- based ALU? becouse most of the functions of an ALU would be to and or xor nand, all of that jazz.

[HansLemurson]

@iammrhellohowareyou

This would be a "Logic Unit", but can't by itself to arithmetic. It's true that if I combined it with a bit-shifter I could do addition by doing multiple passes of AND and XOR, but this particular device can't do XOR. I've made a Universal logic gate in November which can do all 16 though. I'm currently working on a CPU which uses an ALU that can do addition, subtraction, shifting and all 16 logical operations, but only 4 of them are useful.

[Cool12309FromRoblox]

The false was made by forcing all wires on and then inverting the output, right?

[HansLemurson]

@Cool12309FromRoblox

Yes, before the addition of Pistons, that was the only way to force a line off; force it to 1 then invert. With pistons, you have the option of a more straightforward disconnection if you want by removing blocks from next to repeaters, or by cutting wire running up a step. The latter is quite useful since it lets you cut a signal without adding any additional delay to the wire it's running through.

[LizTaylorsGhost]

This is really remarkable stuff, honestly remarkable. I've watched this one and the others since discovering your channel and its astonishing that you had the patience and wherewithal to set up devices like this.

[batmanbugscanfly]

next time can u please upload a schematic :P

[spudd86]

So now you can make a redstone FPGA.... I'm not sure what you'd do with something like that but you can do it :P

[stoffe1100]

Your good :)

[arkayblesses]

I'm excited to see this or a derivative of it implemented in an ALU :D

Great work!

[HansLemurson]

@arkayblesses

When I finish the project I'm currently working on, I'm going to make a superior version of this: The UNIVERSAL Logic Gate which can do all 16 Logical Relationships. Then that thing is gonna go into an ALU along with a Carry/Select Adder and a Left/Right Bit Shifter.

[arkayblesses]

@HansLemurson

Outstanding.

[BobDole2isback]

This takes me back to when I took Digital Electronics in high school...Thanks for the vid man :D

[BobDole2isback]

666 views! EVIL!!!!! :o

:P

[cxgamer]

So basicly it's 1 bit ALU? :p

[HansLemurson]

@cxgamer

1 Bit ALU? Sir, you insult me! It's doing 4 bit operations. You did notice that the inputs and output all had 4 bits, right? It is however only half of an ALU; it needs to be connected to an Adder as well, and can't do XOR. Both of these functions will be shown in later videos.

[cxgamer]

@HansLemurson I apologise. I meant 4 bit. I'll be waiting on further expansions. :)