Keyboards have small bumps on the F and J keys. These help people type without looking. The bumps guide fingers to the right spot. This makes typing faster and more accurate. June E. Botich patented ...
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Keyboard: Why are there small lines on F and J on the keyboard? Have you understood the design?
If you are connected with technology and use a computer or laptop. Then you must have seen small raised marks or bumps on the 'F' and 'J' keys on the keyboard. You may not have even noticed these ...
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