Avionics hard real-time systems' design concerning fault tolerance

• Computers are present in the every day life of almost all individual (Z1, 1936; ENIAC 1945) • Lot of improvement was achieved all over the world, since that time • General computers share the market together with the embedded ones • It is unrealistic to assume that a computer system will never fail • Computer systems should continue operating as normal as possible despite the presence of faults