ToolChest Software, Inc.
SN-205 Calculator
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The Scientific Notation SN-205 Calculator

The SN-205 Calculator™ is an easy to use, scientific calculator that is specifically designed for physics, mathematics and
engineering students who routinely use scientific notation or physical constants in their calculations.  It is also an excellent
teaching tool for learning and using scientific notation since it operates exclusively in scientific notation.
SN-205 Calculator

  •   Intuitive, educational design
  •   Exclusive use of the scientific notation system
  •   9-digit mantissa and 2-digit exponent displays
  •   20 preset physical constants in the International System of Units (SI)
            including:        
                Speed of light in a vacuum
               Standard acceleration of gravity                       
               Newtonian Gravitational constant                
               Unified atomic mass unit                       
               Avogadro constant                                
               Boltzmann constant                                
               Molar (Ideal) gas constant                        
               Faraday constant                                
               Electric constant (permittivity of a vacuum)       
               Magnetic constant (permeability of a vacuum)       
               Coulomb constant                                
               Stefan-Boltzmann constant                       
               Elementary charge                               
               Planck constant                               
               Electron Compton wavelength               
               Rydberg constant                               
               Bohr magnetron                                
               Electron rest mass                             
               Proton rest mass                                
               Neutron rest mass
  •   5 preset special mathematical constants
  •   18 common algebraic and trigonometric functions
  •   Pop up instructional boxes
  •   Order of magnitude table
  •   Easily accessible, instructional on-screen User’s Guide
SN-205 Scientific Notation
Calculator
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Features of the SN-205 Calculator