Read-only memory is not only essential to your computer, but is also used in everything from video games to microwaves. Learn about the different types of ROM and how they're used.

Have you ever noticed video quality to be a little fuzzy, gone into settings and wondered if 720p vs. 1080p makes that much of a difference? Let us explain.

Prepaid cell phones are a great alternative for people who are tired of contracts. Learn more about prepaid cell phones in this article.

Casting lets you go from watching a movie or TV show on your mobile device and to watching it on your TV without ever skipping a beat. And Roku devices make it super simple.

It's a foundational element of device integrity, but you wouldn't be the first person to beg the question, "What is a UPS?"

The most useful thing to know about the Global System for Mobile communications (GSM) is that it is an international standard. If you travel in Europe and many other parts of the world, GSM is the only type of cellular service available.

HDMI is more than a port on the back of a TV (and the often expensive cable that fits inside). It's a set of rules for allowing high-definition electronic devices to communicate.

Microsoft Excel is an advanced spreadsheet program that enables you to keep track of and display data in many ways, including bar graphs. Learn how to make a bar graph in Excel from this article.

Flat screen TVs come in different flavors. Learn about the difference between LCD and LED in this article.

What's the real reason you can't make a phone call during a flight? Is there really any interference between the aircraft equipment and your cellphone signal?

For less than $100, you can get a pocket-sized gadget that will tell you exactly where you are on Earth at any moment. As long as you have a GPS receiver and a clear view of the sky, you'll never be lost again. Learn more!

In the digital world, alphanumeric characters play an important role. The term "alphanumeric" encompasses both letters and numbers, creating a versatile set that forms the foundation of written language, computer programming and secure password creation.

Geofencing is a technology quietly reshaping the marketing and consumer engagement landscape. It establishes virtual boundaries around physical spaces, linking your device to businesses and services effortlessly. When you step across these boundaries, you receive timely messages — discounts, event reminders or exclusive offers — all customized to your location.

Next to the battery icon on your phone, you see "LTE," meaning ... meaning what, exactly? Learn how LTE helps you stream while also enabling smart cities.