International Journal on Computer Science and Technology (IJCST)
Real time computing systems in which the consequences of failure can be very high are termed as safety critical computer systems. Many such systems exist in application areas such as aerospace, defense, transportation and medical devices. Software safety is a composite of many factors. Software for safety-critical systems has to deal with the hazards identified by safety analysis in order to make the system safe, risk-free and fail-safe. To prevent system hazard leaded by software failure, steps insuring software safety must be done.