The Inner Workings of Vending Machines

The video explains how vending machines operate, starting with the keypad for product selection, followed by payment processes using bills and coins. It details how the central computer verifies transactions and dispenses change. The video also covers the mechanisms used in older and newer machines for dispensing products, such as metal coils and motorized arms.

Describe the mechanism used in older vending machines to dispense products.

What is the role of the motorized arm in newer vending machines?