Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.0
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3495
Points per Word
0.000286
Page Count
48
Points per Page
0.020833
Series
Kids and Computers
Description
This book surveys the history of devices leading up to modern computer systems, from ancient celestial calculators and abacuses to punched card systems and the Univac.