You can use two Windows machines at once with a single keyboard and mouse without any special hardware. I had an extra laptop lying around that now connects with the same keyboard and mouse as my PC.
It's true that thin and light laptops in recent years, like the MacBook Air, have changed the game for portability and performance — especially with the massive gains in the battery department.
Setting up a dual monitor system to extend your screen and optimize computer display settings for a more productive and efficient workspace. Pixabay, DaveMeier Setting up two monitors on a single ...