Embedded systems remain incredibly common. Most individuals will encounter them daily, both at home and at work. Embedded systems appear in cars, watches, appliances, heating and ventilation systems, automatic teller machines, medical devices, cell phones, and other electronics. In general, electrical or computer engineers and computer programmers work most directly with embedded systems. Electrical and computer engineers can design the underlying electronics, while software engineers can write the programming code necessary for them to function. However, embedded circuits remain so common that people in many professions, from airline pilots to surgeons, will still interact with multiple embedded systems in their work environment daily.