What is the input process and the output of an paper punch?

The input process of a paper punch involves placing one or more sheets of paper into the punch's designated slot. When the lever is pressed, the punch mechanism exerts force to cut holes in the paper. The output consists of the punched paper with holes and the small circular paper scraps, known as punch-outs, that are discarded or collected. This tool is commonly used for organizing documents in binders or folders.