Hedgehogs, hedgehog, 17 species of hedgehog in five genera. A hedgehog is any of the spiny mammals of the subfamily Erinaceinae, which is in order Erinaceomorpha. There are found in Europe, Asia, Africa and New Zealand (by introduction). There are no hedgehogs native to Australia, nor the Americas.
Simulated Evolution is the umbrella name for a set of projects focused on using agent-based modeling to explore and learn about evolutionary processes.
The input is an analog signal, and the output is a one bit digital representation of the analog signal. In the simulator, you can control a simulated voltage source that is the input the the comparator, and the digital output bit is indicated with a simulated LED.