How to turn your TV into a monitor for free

It used to be that if you wanted to use a TV as a monitor, you made plenty of compromises. Technology, however, has advanced, and if you make the right choices, you can use some of the better TVs as full-time PC displays — even when you need to get work done. Here’s what you need to know going in, and the options you may have depending on your hardware. In many circumstances, you should be able to make the switch at no extra cost.