To find out just how many keys could be fitted onto a laptop, I drew out a rough plan. The key pitch on the paper is 19mm, exactly the same as on all three laptops that I had to hand (MacBook Air 13", Dell E5470 14", Thinkpad E480 14"). You can see the results attached below - without rotating the columns away from vertical you could easily fit in at least 80 keys (allowing some to be half height like standard laptop function keys). Rotating the columns would reduce this of course.
1 Like