Birthstones: Discover Your Birthstone Color By Month Polished birthstones for each of the 12 months Birthstones and their vivid colors have long been a way to connect your birth month with rare and unique gemstones.
An audio interface is a piece of hardware that expands and improves the sonic capabilities of a computer. Some audio interfaces give you the ability to connect professional microphones, instruments and other kinds of signals to a computer, and output a variety of signals as well.
To use an interface, you write a class that implements the interface. When an instantiable class implements an interface, it provides a method body for each of the methods declared in the interface. For example, In the robotic car example above, it is the automobile manufacturers who will implement the interface.