>>2062020
I guess input going by the description. I know just stuffing things inefficiently into the factory is probably best for throughput, but I like it when the factory is compact as possible and runs like a well oiled machine.

For example, this setup uses a single belt to input iron and copper in the proper ratios and outputs 1 red, 1 green, 1 inserter, 1 belt, 1 cog, and 1 circuit every two seconds to the same belt, filling up storage at the end of the line.