If you're not asking how companies that make keyboards produce raised letters on the keys, then please be more specific.
There are a couple of ways this could be done.
The letters could be molded in. I'm not aware that anyone actually does this, but it would work.
The ink used to paint the letters on has a certain thickness after it dries. By carefully choosing the ink used, this can produce noticeably raised letters.
Press the letters on the keyboard.
with the keyboard letters
It is used to input letters and numbers into the computer.
Well, They Have One To Input Letters into the System
By using the keyboard to type in characters
Set your computer on CD or DVD.
The computer keyboard.
because when you type on the keyboard it inputs the letters/words on the computer, so there connected making them input devices.
Capitalized letters are the "bigger" versions of letters. These are the ones that appear on your computer keyboard.
The main function of a keyboard is to input data to the computer.
Communicating with the computer. Giving it instructions or data.for character ( letters, numbers, symbols etc) input into a computer. that is the reason why the keyboard is called an input device.
Because they are the popularest letters.