Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
Macs, PPC, NeXT... History
Haxor.dk published an interesting overview of the PowerPC processor line... from the 601 to the 8500 designs. (link credit: Peter Perls)