An industrial system consists of inputs, processes and outputs. Raw materials, labour, costs, transport, power and infrastructure are inputs. In a cotton textile industry for example, inputs are cotton, human labour, transport cost, etc. Processes are activities done to convert raw material into finished products. In a cotton textile industry, ginning, spinning, weaving, dyeing, etc are processes. The finished product and all profits earned are the outputs. In a cotton textile industry, the outputs are clothes we wear.