Apple and Windows products have never got along. That’s why many people are surprised to discover that they can, indeed, use their iPad as a monitor for their Windows PC.
Yes, it’s true. And it’s actually easy even if you know nothing about computers.

Duet Display Makes It Easy

There’s a software called Duet Display that was created by ex-Apple engineers. That software, for years, has let you turn your iPads and iPhones into a second display for your Mac.
But a recent software update lets Duet Display also work on a PC. It isn’t free. You’ll have to pay $9.99 for it. However, it works exactly as you would expect. Here’s what you need to know about getting it working:
-Duet Display supports Windows 7 and Windows 8 machines
-You connect to the iPad using the Lightning connector
-You can customize your Windows display settings to use the iPad as a secondary monitor, as a mirror display, or as an extended display
-Windows treats the iPad as a generic plug and play monitor and limits it to a resolution of 1024×768, which means this isn’t a great solution if you want HD video
Step 1) Download Duet Display
Step 2) Download the iOS companion app for your iPad
Step 3) Connect your iPad to your PC using the Lightning/USB connector

The software promises to be a high performance solution with 0 lag, although early PC reviews indicate that small lag is a problem for certain displays. You can also connect other iDevices using this method, including all types of iPads and iPhones running iOS 7.0 or higher.
If you carry a PC and an iPad around with you on a daily basis, then this software tool can save you a lot of time.