Teachers often want to project the calculator screen onto a whiteboard.
The Canon F-789SGA II uses a logic engine very similar to the style found in many generic scientific calculator apps. canon f-789sga ii emulator
from sympy import symbols, Eq, solve x = symbols('x') expr = Eq(x**2 - 4, 0) print(solve(expr)) # returns [-2, 2] Teachers often want to project the calculator screen