Pocket Calculator

year written year set author title quote note
1963/1964 ca. 2100 Arthur C. Clarke The Sunjammer Diana’s tiny computer—the size of a matchbox, but the equivalent of a thousand human mathematicians—considered the problem for a full second and then flashed the answer.

Story is set two centuries after Joshua Slocums solo circumnavigation of the earth (1895 – 1898)

The computer is probably not a pocket computer, but certainly small enough to be carried in a pocket.

1967 First prototype of a pocket calculator (TI)
1972 First scientific pocket calculator (HP 35)
$Date: 2018-01-02 22:39:25 +0100 (Tue, 02 Jan 2018) $