Sign languages, also known as signed languages, are those languages which utilize the visual-manual methodology to communicate meaning. In this languages, the meaning is transferred by using manual and non-manual elements. Sign languages belong to natural languages and have their own lexicon and grammar, meaning that they are not universal and mutually intelligible, even if they have similar features with sign languages.
Linguistics considered both signed and spoken languages as natural languages, meaning that both of them have origins from an abstract and evolve over the time. Furthermore, sign languages should not be confused with body languages, a type of nonverbal communication.
The term ‘braille’ refers to a tactile writing system which is utilised by individuals who have visual problems. Originally, braille was written on paper. However, with the digital development, braille users have started reading on computer screens and other electronic devices using refreshable braille displays. Users can write braille by using the original slate and stylus or typing it on a braille writer.
Braille characters consist of rectangular blocks, known as cells, which are made by a set of raised dots. The number and position of these dots distinguish one letter to another.
Furthermore, another way people use to communicate with other individuals is the non-verbal communication. This type of communication includes four main categories: aesthetic, physical, sign and symbols.
Aesthetic communication occurs with a creative expression. This communication includes all the arts such as music, theatre, craft, art, sculpture and painting.
Physical communication includes all the personal kind of communication such a touch, smell, salute, smile and other body movements.
Sign communications consist of the use of flags and lights, as well as horns and sirens, to transmit a message.
Finally, symbols communication is used for religious and personal reasons, as well as to increase the personal self-esteem. This type of communication includes the use of objects such as jewellery, cars, clothes to communicate the individual social status, as well as his/ her influences and religions.
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