Hangul syllable Ddaed

It is one written syllable, not a complete message.

Hangul groups letters into blocks, usually one syllable per block. 땓 combines the initial ᄄ, vowel ᅢ, and final ᆮ; Unicode can also represent the same syllable as a sequence of those three separate Hangul letters. This is a spelling structure, not a picture.

The writing system behind Hangul was designed in 1443 and introduced in the 1446 Hunminjeongeum manuscript. It addressed the difficulty of writing Korean with Chinese characters; earlier methods such as Idu, Gugyeol, and Hyangchal adapted those characters for Korean. These are earlier Korean writing methods, not variants of this syllable. Hangul became Korea's official national writing system in 1894 and lost that status in 1910 under Japanese rule. Later it also became a focus of Korean national identity and preservation. These are shifts in Hangul's public role, not extra meanings of this block.

how do I type 땓?

Use a Korean two-set keyboard layout and enter its three letters.

On Dubeolsik, the common Korean two-set layout, press Shift+E, then O, then E. Those keys enter ㄸ, ㅐ, and ㄷ; a Korean input method combines them as 땓. On another Korean layout, use its equivalent letter keys.

If you enter a vowel immediately after ㄷ, the input method may move ㄷ into the next syllable as its initial consonant. That is normal Hangul composition; use a separator such as a space to commit 땓 first when it needs to stand alone.