The 99 Club

Once upon a time, there lived a King who, despite his luxurious lifestyle, was neither happy nor content. One day, the King came upon a servant who was singing happily while he worked. This fascinated the King, why was he, the Supreme Ruler of the Land, unhappy and gloomy, while a lowly servant had so much joy. The King asked the servant, “Why are you so happy?”

How Do Vending Machines Deal With Our Money?

I was at a vending machine the other day trying to get myself some drink.

A thought came to my mind. How do vending machines know