The customer is the receiver of the output; the customer can be an internal end customer or an intermediary to the next “chain” of events on the way to the final customer. Ultimately, we are aligning our actions (Suppliers, Inputs, Processes, and Outputs) in a way that provides the biggest benefits for our final customer. […]
To go on further with the output discussion, we need to make sure we have an understanding of indicators. Indicators inform us what is going on. My stomach growling is a pretty good indicator that I am hungry, and sweating while mowing the lawn is a good indicator I will need a refreshing beverage upon […]
Our organization’s structure can confound what constitutes and output. Consider the company that is structured as a “functional” organization, the output from one group will typically go to another group in the system. This organization structure is sometimes referred to as “silo” since each part of the company, group or department is segregated by expertise. This has […]
Each process produces some sort of, at least intermediate output. The ultimate output will be the resultant of the series of inputs, processes and outputs, and will be directed toward the ultimate end customer. Therefore the ultimate output capability is the collection of all of the inputs and processes of the systems of the organization. […]
We like the title Random Acts of Product Development. It often appears that product development is a collection of ill-conceived and poorly executed tasks. Those planning refuse to recognize dependencies between groups and tasks and are unable or unwilling to acknowledge they are really working within a system – blinded by the solely important launch […]
We see well-meaning people adopt an attitude “if it needs done, then I will do it” even if their job or position in the company does not define them as the person to solve the problem. I call this absorption and it is part of the much ballyhooed “can-do attitude” upon which many companies thrive. […]
We strongly recommend automated testing whenever this approach is feasible. The test team can use a language designed for this kind of testing; for example, the National Instruments product Labview. The software should be able to read in the documented test cases, execute the test cases against the product, and finish by producing a […]
With fifth dimension testing, we use techniques more commonly employed by the “bad guys.” For example, we may execute techniques such as: Fuzzing Response modification using genetic algorithms Input breakdown Overflows Underflows This approach allows for evolution of our test collection. We can automate a significant number of these tests if we have a comprehensive, […]
Extreme testing occurs when we deliberately “torture” both the hardware and software to see what happens under undesirable conditions. Some examples of extreme testing include: Random voltages within the allowable voltage boundaries Voltage slews Deliberately introduced random noise on the data bus Extremely high bus loading (over 80% and sometimes over 90%) to see […]
Stochastic testing occurs when we allow a reasonably well-seasoned test engineer to go with their “gut” and feel their way about the product’s performance. During the development of numerous embedded automotive products, we have seen stochastic testing elicit roughly the same amount of test failures as combinatorial testing. We are not recommending that stochastic testing […]