If you are looking to purchase a vending machine, the term MDB will be the most important term you will need to learn. What is the MDB/ICP Standard? The Multi-Drop Bus/Internal Communication Protocol is an Interface Standard that allows the various components of a vending machine to become interchangeable. That means you can purchase different types of vending machines from different manufacturing companies, and yet still be able to interchange the parts amongst your equipment when needed. It is a very important capability when you are thinking about becoming a vendor and establishing a vending machine route in your area.
A bill acceptor in a vending machine is the most important part that should be MDB. So is a coin changer. If you can make sure that all your machines have MDB bill acceptors and coin changers, you will have a much easier time servicing your route on a daily basis.