Smartphone killed the calculator star. Some thoughts... and data too

[Marcio]

Calculators, in this time and age, are used by enthusiasts and students only. I guess it's now a hobby for many (except for the 12C?). Straight razors (a.k.a cut-throat razors) went out of business back in the early decades of 1900 and yet enthusiasts (like me) still use them. Barbers (also very rare) are not allowed to use them anymore, they use the shavette (the one with replaceable blades) instead, some use modern multi-blade razors.

Marcio