Reliability Computer software 94 Testing 64 Quality control 59 Computer systems 49 Computer networks 43 Electronic apparatus and appliances 43 Reliability (Engineering) 42 Electric power systems 41 Machinery 35 Fault-tolerant computing 33 Industrial safety 31 Design and construction 30 Computer security 29 Semiconductors 27 Management 26 Mathematical models 23 Development 22 Electric power transmission 21 Integrated circuits 20 Electric power distribution 18 System failures (Engineering) 18 Electronic digital computers 17 Failures 17 Automobiles 15 Engineering 15 Electronic packaging 13 Evaluation 13 Defects 12 Prevention 12