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Here's where we boldly confront a grim reality - nothing is perfect in the real world. We do our best to maintain accuracy in our circuit board designs, but the manufacturing process produces imperfections. Our CAD systems assume a drill is perfectly centered in a round pad. It never is. We declare specific trace widths, and when we measure them on an actual board they are always slightly thinner or thicker than expected. Multiple...

For a while now we’ve been told that IPv4 addresses (you know, the network addresses that look like 192.168.1.1) are running out. and, approximately three decades from now, there aren’t going to be enough of them left to go around. While we have reached the point of IPv4 being fully allocated at a high level, it's still easy to buy or lease IP addresses in any region, and ISPs are not turning down new customers because they cannot allocate them...

My name is Piotr Lazarek. I’m a second-grade student of the secondary school “Filomata” in Gliwice. For over 5 years, I  have been interested in physics, informatics, and technology. One year ago, when I was thinking about the focus of my project, I considered the idea of building a Mars rover. After further thought, I realized that there are dozens of competitions around the world in which hundreds of such vehicles have already been presented...