Tyler Lacoma has spent more than 10 years testing tech and studying the latest web tool to help keep readers current. He's here for you when you need a how-to guide, explainer, review, or list of the ...

Learn how to tweak your desktop or laptop display using free test patterns or the built-in utility in Windows or Mac OS X. Matt Elliott is a senior editor at CNET with a focus on laptops and streaming ...

The picture on a TV set used to be the combined product of multiple analog systems, and since TVs had no internal diagnostics, the only way to know things were adjusted properly was to see for ...