What Did They Use Before Calculators

The History Of The Calculator

https://www.thecalculatorsite.com/articles/units/history-of-the-calculator.php

In the very beginning, of course, was the abacus, a sort of hand-operated mechanical calculator using beads on rods, first used by Sumerians and Egyptians around 2000 BC. The Abacus: Bean counter's …

The History of Calculators: Evolution of the Calculator (Timeline)

https://edtechmagazine.com/k12/article/2012/11/calculating-firsts-visual-history-calculators

A Brief History: The arithmometer was the first commercially successful calculating machine to complete all four basic operations — addition, subtraction, …

The History of Calculators and William Seward Burroughs

https://www.thoughtco.com/history-of-calculators-1991652

Determining who invented the calculator and when the first calculator was created is not as easy as it seems. Even in pre-historic times, bones and other objects …

Before There Were Calculators - A Resource Guide to the Abacus

https://www.mortgagecalculator.org/helpful-advice/abacus.php

The History of Calculating Tools - History-Computer

https://history-computer.com/the-history-of-calculating-tools/

From 1851 to the late 1880s, Thomas’s arithmometer was the one and only mechanical calculator on the market. While it fell in popularity in the late 1800s and early …

The Calculator: A Brief History - SchoolMart

https://www.schoolmart.com/2017/03/29/the-calculator-a-brief-history/

In 1642, the first true “calculator” was invented: one that performed calculations through a clockwork-type of mechanism. The Pascal calculator, invented by …

How did people do maths before calculators? : r/math - reddit

https://www.reddit.com/r/math/comments/1rkcxk/how_did_people_do_maths_before_calculators/

One thing, for example, is the slide ruler which was wildly popular in engineering/ applied math fields, before calculators. They were sort of like cheat sheets for common …

A Brief History of Calculators in the Classroom - Hack Education

http://hackeducation.com/2015/03/12/calculators

Calculators had already become important business tools, well before the handheld calculator. And in the 1970s, with a fair amount of debate about their effect on …

What were the calculation devices used before the invention of …

https://www.quora.com/What-were-the-calculation-devices-used-before-the-invention-of-computers

What did people use before calculators? I used paper and pencil, a slide rule (this exact model: Pickett N3-ES Duplex Slide Rule ), and occasionally a book of math tables such …

8 Amazing Mechanical Calculators Before Modern Computers

http://mathandmultimedia.com/2013/07/24/mechanical-calculators/

Below are the 8 mechanical calculators before modern computers were invented. 1. Abacus (ca. 2700 BC) Although abacus is not mechanical, it was one of the most widely used calculating device for …