A sunlight readable computer provides intensity and brilliance in high ambient light conditions. This is possible through its high brightness display up to 1600 nits. The sunlight readable PCs are built for outdoor use and are designed to operate in harsh weather. Greatly enhanced are the contrast ratio in high brightness and direct light conditions. The greater the level of direct light the greater the increase of the contrast ratio. The contrast ratio is increased greater than the level of direct light. The sunlight readable PC is designed to increase readability and reliability without increasing power consumption or producing excess heat. Extreme protection from elements such as water, dust, moisture and heat is achieved through a new breathing technology which keeps the rugged computer healthy in all situations. The sunlight readable computer is a completely waterproof computer and is highly functional in extreme environmental conditions such as vibration and shock. The structural integrity of the unit provides optimum safety and security in the toughest of weather conditions while providing optimal readability and high brightness.