Milestones:Development of the HP-35, the First Handheld Scientific Calculator, 1972 - Engineering and Technology History Wiki
HP Virtual Museum: Hewlett-Packard-35 scientific calculator handheld scientific calculator, 1972
HP-35 "Electronic-Slide-Rule" Calculator - CHM Revolution
LabXchange - In February 1972, Hewlett Packard released the HP-35, the world's first handheld calculator to perform transcendental functions, such as trigonometric, logarithmic and exponential functions. Do you remember your first calculator? | Facebook
The HP 35 calculator
The early history of HP calculators | HPE
Manual for Hewlett Packard HP 35 Calculator | eBay
The HP-35
Hewlett-Packard HP-35 Handheld Electronic Calculator | National Museum of American History
HP-35 - Wikipedia
Hewlett Packard HP-35
Hewlett-Packard introduced the world's first scientific pocket calculator in 1972. The HP-35 cost $395. About $2,3… | Pocket calculators, Fun fact friday, Fun facts
The HP-35 Calculator
File:Hp-35 1972.jpg - Wikimedia Commons
Advertisements for Hewlett-Packard Calculators
Hewlett Packard HP-35
The HP-35
HP 35 - The world's first pocket scientific calculator from 1972 - YouTube
HP 35: The First Handheld Scientific Calculator - HP History
Retro Thing: HP Launches 35th Anniversary Retro Calculator
HP 35
Virtual Museum of Calculators
HP-35
HP 35 - First Handheld Scientific Calculator - HP History
HP-35
