The model decides. Code does the row work.One sample card sets the pattern. The loom does every row.feeding the sample card
The one sample card the Model head readsEight pattern pins, set once from the cardToken meter: rises once, then flatRow counter: 500 to 8,000,000 on a log scaleA punch card loom. The head reads one sample card, sets its pins and never reads again; the heddles, shuttle and reed weave every row from those pins. Tokens are spent once on the sample. Each row after that is code, so the cost per 1,000 rows is the same at 500 rows or 8,000,000. Illustrative numbers.