Refrigerated areas must be at or below 45 degrees, freezers at or below zero, and hot food must remain at 140 degrees or just higher. Rugged tablets have to endure these highly variable temperatures and move among them as needed.
Cooking or steaming generates humidity, whereas it might be very dry and dusty outdoors. And equipment must be frequently cleaned and disinfected to avoid food contamination. A rugged tablet PC is tightly sealed against dust and moisture, with exterior materials that can stand up to water and cleaning chemicals. Batteries and processors are specially designed to produce minimal heat, even over long time periods, eliminating fans or crevices that could harbor germs.