This volume considers testability aspects for digital ICs. The strategy taken is to integrate the testability aspects into the design and manufacturing of ICs and, for each IC design project, to give a precise definition of the boundary conditions, responsibilities, interfaces and communications between persons, and quality targets. Macro Test, a design-for-testability approach, provides a manageable test-programme route. Using the Macro Test approach, one can explore alternative solutions to satisfy pre-defined levels of performance (such as defect detection, defect location, test application) within a pre-defined cost budget and time scale. This book presents a tried and proven method of using a Macro approach to testing complex ICs and is intended for all test engineers, IC designers and managers concerned with producing high quality ICs.