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Abbreviations for scientific functions are printed next to the keys on the case of
Platon XL. Functions which are operated in layer 3 are printed in
italic
. For blind
and visually impaired people all functions with the keyboard layout are listed below:
5.3.1: Sinus
level 2, row 1, left key in 4 x 4 group
and numerical key 7 in level 2 respectively
5.3.2: Cosine
level 2, row 1, column 2 in 4 x 4 group
and numerical key 8 in level 2 respectively
5.3.3: Tangent
level 2, row 1, column 3 in 4 x 4 group
and numerical key 9 in level 2 respectively
5.3.4: Arcsine
level 3, row 1, left key in 4 x 4 group
and numerical key 7 in level 3 respectively
5.3.5: Arccosine
level 3, row 1, column 2 in 4 x 4 group
and numerical key 8 in level 3 respectively
5.3.6: Arctangent
level 3, row 1, column 3 in 4 x 4 group
and numerical key 9 in level 3 respectively
5.3.7: Hyperbolic Sine
level 2, row 2, left key in 4 x 4 group
and numerical key 4 in level 2 respectively
5.3.8: Hyperbolic Cosine
level 2, row 2, column 2 in 4 x 4 group
and numerical key 5 in level 2 respectively
5.3.9: Hyperbolic Tangent
level 2, row 2, column 3 in 4 x 4 group
and numerical key 6 in level 2 respectively
