Language is a human ability that is used to communicate with other humans with signs, whether or not movement.

While sign language is a language that uses more on body language, lip movements, and hand or finger movements.

Actually there are no agreed international standard rules regarding this language, because almost in various countries use different sign languages that have been adapted in such a way.

If we want to learn the language, it certainly takes a short time, this article only discusses from the most basic level, namely recognizing letters and numbers, if you are increasingly interested.

This time the author will only discuss from several countries, including the American (ASL), English (BSL), and of course Indonesian (SIBI and BISINDO) versions.