Electronic Calculator / Antiques of the Present

Notes

Casio, Model HS-8VA, solar power with battery backup

Definition

A portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.

Invention

1957 A.D. by Casio, Japan

Obsolescence

2025 A.D. - 2028 A.D.

Predecessors

Bones, pebbles, counting boards and the abacus, before 2000 B.C., Sumerians and Egyptians; Antikythera mechanism, late 2nd century B.C., Greek; geometric-military compass, 17th century, Galileo; Napier bones, 1617 A.D., John Napier, Scotland; the mechanical calculator, 1642 A.D., Wilhelm Schickard, Germany.