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Posts Tagged ‘system validation’


Implementation in Requirements – Internal Directive (i.e., Constraint) to use a Legacy Component.

Posted on: May 15th, 2017 by Lou Wheatcraft No Comments

We were recently asked the following question from one of our clients: “Our company is updating/replacing a legacy system.  The current system includes an embedded processor that was already built long ago and was developed without any requirements (at least … Read More

Requirements – What’s the Big Deal????

Posted on: February 28th, 2017 by Lou Wheatcraft No Comments

Note: this is an update to this blog originally published in 2012. Preparing for the future A constant throughout the evolution of systems engineering is an ever-increasing complexity of systems which can be observed in terms of the number of … Read More

What is the difference between verification and validation? Part 2

Posted on: January 15th, 2016 by Lou Wheatcraft No Comments

This is the second of our two-part blog concerning verification and validation.  In part 1 we discussed the basic concepts of verification and validation in terms of the context in which they are used within the system development lifecycle. In … Read More

What is the difference between verification and validation? Part 1

Posted on: December 31st, 2015 by Lou Wheatcraft 3 Comments

A question we are often asked is “What is difference between verification and validation?” This two-part blog answers that question.  In part 1 we discuss the basic concepts of verification and validation in terms of the context in which they … Read More

How Do I Know When My Requirements Are Sufficient?

Posted on: February 28th, 2015 by Lou Wheatcraft 1 Comment

This question was asked recently on a popular discussion group. Maybe a better question to ask: “How do I know when the requirement set for the system of interest is “done enough” to give to the development team?” Where “done … Read More