Several ways to do this as others have related. In my home office I have three computers. Each with large screens. On one I study and write music. That's the one shown. The computer that connects everything together is hidden under the monitor, a small netbook because music composition requires little compute power.
Number two is behind this photo on opposite side of the room. Also wide screen, typically showing two windows, devoted to the same project. Used for high-end computer graphics and animation. It has oodles of memory, gajillions of disk space, nearly supercomputer CPU. Software includes Maya animation software used in a lot of blockbuster animated movies.
Number three is a midrange laptop. It hides under a 42-inch monitor and is connected wirelessly to a keyboard and mouse. I can sit in my easy chair across the room, feet up, and write stories. I've set up Word so I can highlight a word or phrase and with one keystroke bring up Google, Thesaurus, Encyclopedia, and Google maps in a second or occasionally third window on the monitor. I can virtually drive through cities or using Google Earth and its satellite images to fly over a landscape.
Also use this monitor to watch streamed TV and movies via a Sony Blu-ray console which also plays DVDs.
All of it useless if inspiration fails me. Then I take a vacation from work by reading a book - usually printed rather than an ebook. Sometimes the old ways are better than the new!