We use the keyboard to write using a computer. Pressing the letters types the word we want to use. Pressing the spacebar adds a space. Then we can type our next word. When we start a new sentence ...

Tsubasa Yumura, a computer science researcher in Japan, rigged up a keyboard that looks like it launches letters into the computer when they're pressed. It uses a technique called projection mapping.

With this idea, the letters were arranged in such a way that the typist did not have any problem when typing. This keyboard was named QWERTY, the first 6 letters in the upper line are Q, W, E, R ...