An In computing, an icon is an image that represents an app, fe... that expresses and idea, emotion, word, etc. An icon that expresses and idea, emotion, word, etc. Emoji a... are used to make digital communication more emotional and fun. Emoji originated in Japan in the late 1990s and became popular worldwide when mobile devices added them to their operating systems. In 2015, Time Magazine named the Face with Tears of Joy emoji the word of the year.