The majority of the Japanese use the QWERTY layout, and after typing a chunk of words in romanized characters, hit the space bar to get the Japanese scripts, and then enter. ※There are several versions of romanized characters in Japan, so which one you need to use depends on your computer's configuration. Very few people use kana input, although if you master it, your typing speed will become, theoretically, twice faster because you don't need to hit two or three keys to get one Japanese letter.

Hi , as I myself had this issue some years ago, somewhere on the web I found an article intended to study whether PC-typing "killed" Kanji( calligraphy). Actually, the article was not to bent to critic the IME( input method editor) because someway typing Romaji helps student to recall the Kanji as they see it appear. As a matter of facts, when Japanese people don't recall the Kanji, they simply write it in Hiragana (which is not an unusual fact, Japanese can confirm this). Good studies.

Ciao Andrea, take a look at: https://en.wikipedia.org/wiki/Japanese_input_methods Hope it helps, tano