The design and construction of electronic circuits to solve practical problems is an essential technique in the fields of electronic engineering and computer engineering.
The temperature of the body is mainly regulated by the hypothalamus.
This region of the brain regulates the homeostatic mechanism that promotes both the production and the loss of heat.
In spite of the changes in the environmental conditions, the hypothalamus keeps constant the internal temperature.
Moreover, the external temperature of the skin is controlled by both the hypothalamus and the thermal sensors that cause both the afflux of blood to the skin and the perspiration.
The breathing system transfers the oxygen to the blood and expels the carbon dioxide in the atmosphere.
The breathing frequency can be calculated by measuring the expansion or the contraction of the chest and also by measuring the movement of air that enters and exits from one nostril.
