Calculator Museum
Jerry Merryman, the man who helped invent the hand-held calculator, has died | CNN Business
How much was the first pocket calculator and what was it? - Quora
The History Of The Calculator: When was the Calculator First Invented?
Calculator - Wikipedia
A history in calculators
File:Vintage Sharp Electronic Pocket Calculator, Model EL-805, COS-LCD, First Use Of The COS-LCD, Flip-Up Display Cover-Shield, Made In Japan, Circa 1973 (15271504422).jpg - Wikimedia Commons
TI-59 / TI-58 - Wikipedia
The early history of HP calculators | HPE
First American Pocket Calculator - LimeGong
The History Of The Calculator: When was the Calculator First Invented?
Remember Your First Pocket Calculator?
Dr. France Rode - Inventor of the first pocket-size calculator - Slovenian Museum & Archives
The First Electronic Calculator | EAGLE | Blog
11 Calculators That Show How Far Computing Has Come in the Past 2,000 Years
Calculator - Wikipedia
Timeline
TI Cal-Tech: World's First Pocket Electronic Calculator
Jerry Merryman, Co-Inventor of the Pocket Calculator, Dies at 86 - The New York Times
Hewlett-Packard HP-35 (World's First Pocket Scientific Calculator), 1972 | Taschenrechner, Vintage, Rechnen
How much was the first pocket calculator and what was it? - Quora
HP 35: The First Handheld Scientific Calculator - HP History
HP-80 History, Design and Interesting Facts
Pocket Calculator - The Golden Age
The History Of The Calculator: When was the Calculator First Invented?
HP Virtual Museum: Hewlett-Packard-35 scientific calculator handheld scientific calculator, 1972
First Handheld Calculator - Decades TV Network - YouTube
