while the back end of the swarm simply follows the leaders. Somehow, this is a successful evolutionary strategy, but it can also be exploited to build logic gates using only crabs. The team ...

For those just getting their start in digital logic, this teaching tool allows different logic gates to be wired together with patch cables. While [David] first thought to use 74-series logic ...

Logic gates have one or two 0 or 1 inputs but only one 0 or 1 output as in the following examples. Transistors make up gates, gates make up circuits, and circuits make up electronic systems.