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Hardware To Avoid

There are lots of informative texts on good hardware designs which are of course well worth reading. But sometimes it is even more educating to look at examples of especially bad hardware design.

The following examples from actual real-life systems generally fall into two categories. Either they limit the functionality of the complete system because of (non-obvious) limitations - usually performance limitations, or they are so ingenious that they push software costs to an extrordinary amount where standard solutions would have been available at a fraction.

Inherently low-performance hardware blocks