This paper describes how to design low-cost reliable computing software for various application systems. by incorporating a single-version fault tolerant scheme along with run-time signature-based control-flow checking. Most of the ordinary systems lack fault tolerant software fix. The conventional fault tolerant approaches viz. https://www.spidertattooz.com/OPI-Infinite-Shine-All-Your-Dreams-in-Vending-Machines-ISLT84-p27376/