Double Keyboard Bumps
If you are a frequent user of a desktop, you probably noticed that there are bumps on the two keys in the keyboard. These bumps are placed on letters F and J. Do you have any idea why? Since we can’t focus on the monitor and keyboard at the same time, the bumps placed on those letters exist to help you figure out the keyboard even while looking at the monitor. Your left pointer finger should rest on the key letter F while your right point finger should rest on the key letter J. These bumps help you remember the location of other remainder keys in the keyboard. Such a great help, especially to those who are working every day using a desktop!

Double Keyboard Bumps