Example: Imagine a toaster the computerized. You were  provider of software in this business. Your staff tested chain the device that sent electronics signal to one per the lever during a censor detected the release of carbon monoxide (oven was carried out). This code went perfect in the box of your development. However when this device was contained into one chip and was put in oven, the hot variation that rose descended caused his silicon to expand and tools this lost his intensity. The validation of the component and the product that find was carried out to anticipate problems like this.

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