A rugged computer mainly designed for operating reliably in harsh conditions and environments such as extreme temperatures, strong vibrations, and wet or dusty conditions. Since inception, they are basically designed for rough usage specified by certain conditions, not in external component but also in internal ones along with cooling arrangements. Generally, hardened and ruggedized computers have same robustness in their design and are frequently interchangeable in certain conditions. Rugged electronics are precise electronics class mainly designed for working in harsh conditions such as drops; withstand dust, extreme temperatures and vibrations.