The small bumps or ridges found on the F and J keys on a computer keyboard are to help users correctly position their left and right hands without having to look at the keyboard. For example, without looking you should be able to feel the correct position your left index finger on the F and the right index finger on the J by locating the small bumps on these two keys. Once you're hands on in the home row position, you should be able to locate the remainder of the keys on the keyboard.

wow.never knew, thank you

They are called the "Home Keys"....
With the forefingers on them, the other fingers can type accurately without necessarily looking at the keyboard

Erngie:
wow.never knew, thank you

Whaooo....u r beautiful and ur fingers are lovely

Lol thank you

Psoul:


Whaooo....u r beautiful and ur fingers are lovely

Erngie:
Lol thank you

Welcome Pretty