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1: Introduction
Platon XL is a scientific calculator with extra large buttons and a huge display with
big digits as well. With the backlit display and the speech output as optional
functions, Platon XL is particularly suitable for visually impaired and blind people.
1.1: Quick Overview on the Functions of Platon XL
Spoken functions with natural voice
Extra large display with 10 digits of 2.5 cm (1 in) height
Extra large buttons, size: 1.5 x 1.5 cm (0.6 x 0.6 in)
Natural and common logarithm
Trigonometric and hyperbolic functions
Arithmetic, geometric, harmonic and root mean square value
Calculations with parenthesis
10 memory spaces
Reciprocal value
Percentages
Square, raise to higher power and extract roots
Calculation of compound interest, cash values and annuities
Conversion of currency and physical units
Date and time with alarm clock function
Volume control in 6 steps
1.2: XL Product Series
XL calculators are available in the following versions:
Non talking, without backlit display
Talking
With backlit display
Talking and with backlit display
Please note that for versions without speech output and without
backlit display not all keys functions are available.
Consult instructions before use!
Do not operate Platon XL
without reading the instruction manual. Get acquainted with the
device and all the accessories. Keep the instruction for
reference reading and pass it on with the device.
