PITTSBURGH (NewsRadio 1020 KDKA) – It can seem almost impossible to choose because they come in different sizes, shapes, brands, and operating systems.

However, the only thing similar about them is that they’re all tablet computers. How do you go about buying the right one this holiday season?

KDKA-AM’s Larry and John talk to the gadget guru, Dr. Frank Viggiano, about which tablets do what and how to know the different between an Android and an iPad without looking into every Nook and Kindle.