- on Miscellaneous Electronics
- Published in issue 11/2012 on page 72
HP-35: A Pocket Revolution (1972)
Hewlett-Packard’s HP-35 was the first scientific pocket calculator in the world. Suddenly tedious and inaccurate computations using log tables and slide rules became a thing of the past. The HP-35 offered square roots and trigonometric and logarithmic functions, all at the press of a button, and to an astonishing ten digits of precision.