kno single screenKno, a startup designing a tablet computer for students, today announced a cheap, single-screen model.

The Santa Clara, Calif. company doesn’t have any devices available yet, but it already announced a dual-screen tablet. The idea is that you could read a book on one screen, then take notes or do other work on the other screen. The single-screen version will be more affordable, said co-founder and chief executive Osman Rashid (who also co-founded textbook rental site Chegg). Among other things, the lower pricing might make more sense for students who aren’t in college yet.

Both the single- and double-screen models should be available before the end of the year, Rashid said. Even if they were built for the double-screen tablets, all the books and apps need to work on a single screen, so content should be accessible on both devices without extra work from the developer.

Rashid demonstrated the single-screen tablet for me backstage at the TechCrunch Disrupt conference in San Francisco today, and you can watch the demo below.

Kno has raised $55 million from Andreessen Horowitz and others.