I have an idea

[viperfan7]

well, I've been thinking, and I belive its posible, I am going to make a computer in openTTD using trains

question is, I'm not shure what gates I can make, shure I can probaly do a nand gate and go from there, but still, I want something turing complete

[cmoiromain]

Try using the search function. Some of this has already been made, for example see the calculator or the LED counter.
A whole computer is perhaps a little ambitious, but hey, there's nothing wrong with trying!

Good luck!

[viperfan7]

well, name for the programing language will be RAIL will become an acronym when I'm not being lazy and the name TRAINIAC, as in ENIAC, I'll probaly only give it enough capability as a calculator, but a programable one posibly with memory and I think I've thought of how to make an easier way to read other then binary, but it will only work at low zoom levels if the game renders zoom the way I think it does