There are different degrees of deafness and this affects the use of different communication alternatives for the deaf. In most cases, the deaf can not play sound because it is deprived of the power to hear, but could speak perfectly, given that he has no difficulty in giving its voice. In these cases, it uses various methods to overcome this lack of hearing. Sometimes surgery is performed or used hearing aids that solve the problem. In extreme cases, the most popular methods are the use of sign language alphabet, the modulation of sounds and recognition of the vibration of the vocal cords. Currently there are telephones for the deaf.
The first five digits are shown rising from one to five fingers. The letter A, with a clenched fist and the hand put forward.
The I, in the same way, with the only difference that stands the little finger.
Yes, in August, for example, is symbolized by taking the front of the neck with one hand. To represent in September, the deaf-mute put your hand on his chin, in the attitude of one who is considering