Uppercase Letters, Capital Letters, Uppercase
noun
You have big writing letters. What do you think these are? THAT WOULD HAVE TO BE UPPERCASE LETTERS, RIGHT? Whoops, sorry, caps lock was on for a moment, there.
おおもじ
This is a jukugo word, which usually means on'yomi readings from the kanji. However, 大 uses the kun'yomi reading and 文 is an exception here, so here's a mnemonic to help you remember this: Whenever you see an uppercase letter, you shout "おお, Moe!" (おおも). Your buddy Moe taught you the letters in the first place, so when you get stuck, you yell for him to come help you. And he always does. What a good guy.
タイトルは、全て大文字でおねがいします。
All uppercase letters for the title, please.
Tだけ大文字で、他は小文字です。
Only the T is uppercase, and others are lowercase letters.
パスワードは大文字で入力して下さい。
Please enter the password in capital letters.