Six Key Input
To replicate using a braille machine, uses six keys on the computer keyboard to present the six dots of the braille cell. These keys are s, d, f, j, k, l. You will also use the space bar to enter spaces between Math codes, the return or enter key to move to the next line, and the backspace or delete key to correct errors.
The keys correspond to the braille dots as follow:
Keyboard finger placement
The left hand index finger will use letter 'f' for dot 1 of the braille cell, with 2nd and 3rd fingers of the left hand using letters 'd' and 's' for dots 2 and 3. The right hand index finger will use letter 'j' for dot 4, with 2nd and 3rd fingers of the right hand using letters 'k' and 'l' for dots 5 and 6
The 6 keys will be pressed in different combinations to produce the braille math codes required to complete all lessons in algebra. It is possible to press multiple keys at the same time. For example, to enter the cell dots 1 2 and 4 5 you would press the f, d, j and k keys together.
'Enter' Key is used here to display message (or) display audio depends upon its function. i.e if error occured, error audio or error message will be display. And Narration/information will display in apprapriate action.
