Digital Technology

Digital Technology book cover — Technology Timelines

Digital Technology — page 1 — Counting Frame An abacus is a simple calculator It was invented at least 5,000 years ago but it is still used in some places today Long numbers are shown by ﬂ icking beads along columns arranged side by side The lower section of this one counts from 1 to 5 and the upper beads show 5 and 10 Each column adds up to 15 Introduction Computers and other digital technologies are machines controlled by a set of instructions called a program The instructions are written as a string of digits numbers that a computer can understand Today computers are in many things from toys to telephones but they started out as machines for doing calculations A DIFFERENT VIEW COUNTING STONES An ancient technique used by shepherds to count their flocks was to make a pile of pebbles one for every sheep The Latin word for pebble is calculus which is where we get the word calculate The stone piles were the world’s first calculators 4

Digital Technology

Digital Technology

The progression of digital technology from yesterday's music box to today's state-of-the-art Smart Phone and nano-circuits.

About This Book

By: Tom Jackson

Illustrated by:

Published by: Brown Bear Books by Black Rabbit Books

9-12Age Range

6.5AR

30Pages

ScienceSubject

1050LLexile

15-30 minsReading Time

ZGuided Reading

ZFountas & Pinnell

80DRA

0

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PAGE 0 OF 29

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