Content addressable memory(CAM). Digital memory as addressable (row/column/etc). CAM is like an army roll call, you shout "Schwartz", and he says "here". If not

Content addressable memory(CAM). Digital memory as addressable (row/column/etc). CAM is like an army roll call, you shout "Schwartz", and he says "here". If not you would have to inspect every member of the army, one by one. Humans do this a lot, via our extreme parallelism. With huge data sets, CAM is essential.