##  [Design for Testability](/design-testability) 

  ##  [Design for Testability](https://engineering.quantumdictionary.io/design-testability-0) 

  

 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)



**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Engineering practice of incorporating interfaces, structures and embedded test functions into electronic hardware and firmware so internal states, interconnections and failure modes become observable and controllable for efficient manufacturing tests, in‑service diagnostics and fault localization.