Hello, I am kinda new to this, and tried my luck with your programming. I want to start with some simple 8 bit addition. So i made a not gate, or, xor, and. But my or gate keeps flikkering. I made this by given 2 inputs to a single not gate, which leads to another not gate, to the output. This not gate then seems to be the issue. I made this not-gate by given 1 input as both input of the nand gate, to the output. it still flickers! I can not change the nand-gate i believe. Can someone solve my issue, as it becomes a problem?

Can I see your gates? I may be able to help

its inputting a 1 and a 0 at same time

ok, so whenever you have 2 wires going into one input, and one is on while one is off, it flickers. This is because the program can't decide what input to actually use. To make an or gate, have two not gates inputting into a nand gate.