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.
Once an interface has been implemented by a class, a client can create an object from the class and communicate with it through an interface reference. You can use an interface to create an object reference but not the object itself. This makes sense because an object requires data properties and method implementations that cannot be supplied by an interface. Because it is not a creatable entity, an interface is an abstract data type.