Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

How do you close the gap between I wonder and I know? You make a prototype. A prototype is a tool that gives you a chance to investigate your ideas and explore what could, should, or would come next, ...

The process of creating a PCB is complex and involves a large number of steps beginning with the Layout stage and culminating in the assembly of the boards. The entire process goes through ...

In modern product development, speed and accuracy are critical. Before mass production begins, engineers must verify that their designs work mechanically, structurally, and functionally. This is where ...