I have some amazing photos on my computer that I would like to display using my old projector. But my PC uses HDMI and my projector uses VGA.
HDMI and VGA are not compatible interfaces. HDMI can handle images and sound through a digital signal whereas VGA can only handle images through an analog signal.
Adapter is a well-known solution in this kind of situation. We need:
- Abstract representations (generally interfaces) of the problem. Here we easily see that a digital interface is not compatible with an analog one.
- Concrete implementations of these abstractions: e.g. HDMIToVGAAdapter & VGA. Here the adapter should be able to delegate some work to the adapted entity.
