Who Invented the Computer?

Who Invented the Computer? book cover — Who Invented the Computer Robert Snedden

Who Invented the Computer? — page 1 — It all adds up Computer life Computers are one of the most common gadgets we use in everyday life Most households in the developed world now own one and they are found in most schools and libraries We use them to store our music and photographs research homework shop play games and keep in touch with friends This versatile tool came about through our need to count things Count on it People have been counting for many thousands of years However doing so exactly and making calculations has always presented problems as people often lose track of what they are doing and make mistakes For this reason they have looked for ways to help them get calculations right The earliest known counting device is the beaded frame called the abacus which was invented about 3,000 years ago It is still used today in many parts of the world An abacus is not a calculator The operator The abacus is still used in many countries today Here a Korean storekeeper uses an abacus to ﬁnd out the total price of the goods he is selling Each stage of a calculation is recorded by moving beads across the frame

Who Invented the Computer?

Who Invented the Computer?

This series looks at some of the major inventions and discoveries that have helped to shape our world today.

About This Book

By: Robert Snedden

Illustrated by:

Published by: Arcturus Publishing provided by Britannica

9-12Age Range

-AR

42Pages

TechnologySubject

-Lexile

30-45 minsReading Time

-Guided Reading

-Fountas & Pinnell

-DRA

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