Block diagrams are clear, simple diagrams showing all of the input, process and output elements that make up the system being designed. They are easy to read and show how the circuit will work.

The urinary system - also known as the renal system - produces, stores and elimiates urine, the fluid waste excreted by the kidneys. The system works with the lungs, skin and intestines to ...

The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body. The digestive organs also move waste material out of the body.