A scientific calculator with a hundred keypad layouts — twenty families, from Ivory Classic and Ten-Key to Broadsheet, Orbit and Reverse Polish, each in five variants. Sixty palettes and five languages.
Behind the keypad sit six workbenches: algebra that expands, factors and solves exactly, with surds, complex roots, partial fractions, linear systems and number theory; linear algebra with determinants, inverses, RREF, LU and QR, eigenvalues and singular values; calculus with symbolic differentiation, adaptive integration, limits, Taylor series, gradients, curl and Runge-Kutta; physics with eighty relations solvable for any variable; and chemistry with a full periodic table giving every element's charges, mass, configuration, melting and boiling points, density and ionisation energy, plus molar masses and an exact equation balancer. Graphing, unit and base conversion and a constants library round it out, and every result from every workbench lands in a history you can download as JSON and load back in.