Perkins Brailler

The Perkins Brailler is a simple, inexpensive machine used to write braille. The Perkins Brailler is a "braille typewriter" with a key corresponding to each of the six dots of the braille code. By simultaneously pressing different combinations of the six keys, users can create any of the characters in the braille code. In addition to these six keys, the Perkins Brailler has a space key, a backspace key, and a line space key. Like a manual typewritier, it has two side knobs to advance paper through the machine and a carriage return lever above the keys. The rollers that hold and advance the paper have grooves designe ...

See also:

Perkins Brailler, Perkins Brailler - The Perkins Brailler, Perkins Brailler - Embossers, Perkins Brailler - Braille Notetakers, Perkins Brailler - Jot A Dot™

Read more here: » Perkins Brailler: Encyclopedia II - Perkins Brailler - The Perkins Brailler

The braille system, named after Louis Braille, is a method that the blind use to read and write. Each braille character or "cell" is made up of six dot positions, arranged in a rectangle containing two columns of three dots each. A dot may be raised at any of the six positions to form sixty-four combinations, counting the space, in which no dots are raised. For reference purposes, a particular combination may be described by naming the positions where dots are raised, the positions being universally numbered 1 through 3 from top to bo ...

Including:

• Braille - The Braille alphabet
• Braille - The Braille cell
• Braille - Encoding
• Braille - Writing braille
• Braille - Letters and numbers
• Braille - Other symbols
• Braille - Unicode rendering table
• Braille - Braille transcription
• Braille - Braille for other scripts

Read more here: » Braille: Encyclopedia - Braille

Many deafblind people make the most of their remaining sight, so the right lighting is vital. Mostly bright, even light is best (avoid glare), but some prefer dim light, so it’s best to ask. Susie Morgan [1] suggests the following guidelines for appearance and attire of interpreters working with deafblind clients: "Wear clothes that provide contrast for your hands. Consider the following when selecting clothing: Dark colors (black, navy blue, brown, dark green, etc.) for persons with light skin Light colors ( ...

See also:

Tactile signing, Tactile signing - Kinds of tactile signing, Tactile signing - Tactile sign language vs visual sign language, Tactile signing - Visual modifications

Read more here: » Tactile signing: Encyclopedia II - Tactile signing - Visual modifications

Braille can be seen as the world's first binary character encoding. The system as originally invented by Braille consists of two parts A character encoding for mapping characters of the French language to tuples of six bits or "dots". A way of representing six-bit characters as raised dots in Braille cell. Today different braille codes (or code pages) are used to map character sets of different languages to the six bit cells. Different braille codes are also used for different uses like mathemetics and music. In addition to simple encoding modern braille transcription uses contractions t ...

See also:

Braille, Braille - The Braille alphabet, Braille - The Braille cell, Braille - Encoding, Braille - Writing braille, Braille - Letters and numbers, Braille - Other symbols, Braille - Unicode rendering table, Braille - Braille transcription, Braille - Braille for other scripts

Read more here: » Braille: Encyclopedia II - Braille - The Braille alphabet

Although it is possible to transcribe braille by simply substituting the equivalent braille character for its printed equivalent, such a character-by-character transcription (known as Grade 1 Braille) is used only by beginners. Braille characters are much larger than their printed equivalents, and the standard 11" by 11" (28 cm × 28 cm) page has room for only 25 lines of 40 characters. To reduce space and increase reading speed, virtually all braille books are transcribed in what is known as Grade 2 Braille, which uses ...

See also:

Braille, Braille - The Braille alphabet, Braille - The Braille cell, Braille - Encoding, Braille - Writing braille, Braille - Letters and numbers, Braille - Other symbols, Braille - Unicode rendering table, Braille - Braille transcription, Braille - Braille for other scripts

Read more here: » Braille: Encyclopedia II - Braille - Braille transcription

Little data exists on the specifics of variation between visual and tactile sign language use. However, what studies there are suggest a significant degree of difference. In hand-over-hand signing, elements of deaf sign languages known as 'non-manual features’ (such as facial expression) will not be received, and will need to be substituted with supplementary information produced manually. Common non-manual features used in Deaf Sign languages that are absent in tactile signi ...

See also:

Tactile signing, Tactile signing - Kinds of tactile signing, Tactile signing - Tactile sign language vs visual sign language, Tactile signing - Visual modifications

Read more here: » Tactile signing: Encyclopedia II - Tactile signing - Tactile sign language vs visual sign language

There are many extensions of Braille for additional letters with diacritics, such as ç, ô, é. When braille is adapted to languages which do not use the Latin alphabet, the blocks are generally assigned to the new alphabet according to how it is transliterated into the Latin alphabet, and the alphabetic order of the national script (and therefore the natural order of Latin braille) is disregarded. Such is the case with Russian, Greek, Hebrew, Arabic, and Chinese. In Greek, for example, gamma is written as Latin gSee also:

Braille, Braille - The Braille alphabet, Braille - The Braille cell, Braille - Encoding, Braille - Writing braille, Braille - Letters and numbers, Braille - Other symbols, Braille - Unicode rendering table, Braille - Braille transcription, Braille - Braille for other scripts

Read more here: » Braille: Encyclopedia II - Braille - Braille for other scripts

Many visually impaired users use electronic portable note-taking devices that allow keyboard entry in braille using the 6-key layout of the Perkins Brailler and output in synthesized speech and/or a one- or two-line refreshable braille display consisting of tiny pins made of metal and plastic. (For more information and a picture, see Braille terminal.) Notetakers include PDA features such as an address book and calculator. Because of the many moving parts and the accessibility of the refreshable braille displays to the environment, notetakers typically cost $4000 to $8000 USD. They are easily damaged and must be ret ...

See also:

Perkins Brailler, Perkins Brailler - The Perkins Brailler, Perkins Brailler - Embossers, Perkins Brailler - Braille Notetakers, Perkins Brailler - Jot A Dot™

Read more here: » Perkins Brailler: Encyclopedia II - Perkins Brailler - Braille Notetakers