Modern uses of pneumatics include the use of compressed air to move objects through pneumatic tubes, the control of industrial processes through air logic control, and the operation of various tools and equipment. While pneumatic systems can be used to perform a wide array of functions, the same types of components are used in any system dealing with pressurized air. In order to understand how a pneumatic system works on the whole, it is important to understand the functions of the various components and how they operate.