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A brand-new edition of the popular introductory textbook that
explores how computer hardware, software, and networks work
Computers are everywhere. Some are highly visible, in laptops,
tablets, cell phones, and smart watches. But most are invisible,
like those in appliances, cars, medical equipment, transportation
systems, power grids, and weapons. We never see the myriad
computers that quietly collect, share, and sometimes leak personal
data about us. Governments and companies increasingly use computers
to monitor what we do. Social networks and advertisers know more
about us than we should be comfortable with. Criminals have
all-too-easy access to our data. Do we truly understand the power
of computers in our world? In this updated edition of Understanding
the Digital World, Brian Kernighan explains how computer hardware,
software, and networks work. Topics include how computers are built
and how they compute; what programming is; how the Internet and web
operate; and how all of these affect security, privacy, property,
and other important social, political, and economic issues.
Kernighan touches on fundamental ideas from computer science and
some of the inherent limitations of computers, and new sections in
the book explore Python programming, big data, machine learning,
and much more. Numerous color illustrations, notes on sources for
further exploration, and a glossary explaining technical terms and
buzzwords are included. Understanding the Digital World is a
must-read for readers of all backgrounds who want to know more
about computers and communications.
An essential guide to recognizing bogus numbers and misleading data
Numbers are often intimidating, confusing, and even deliberately
deceptive-especially when they are really big. The media loves to
report on millions, billions, and trillions, but frequently makes
basic mistakes or presents such numbers in misleading ways. And
misunderstanding numbers can have serious consequences, since they
can deceive us in many of our most important decisions, including
how to vote, what to buy, and whether to make a financial
investment. In this short, accessible, enlightening, and
entertaining book, Brian Kernighan teaches anyone-even diehard
math-phobes-how to demystify the numbers that assault us every day.
Giving you the simple tools you need to avoid being fooled by
dubious numbers, Millions, Billions, Zillions is an essential
survival guide for a world drowning in big-and often bad-data.
The basics of how computer hardware, software, and systems work,
and the risks they create for our privacy and security Computers
are everywhere. Some of them are highly visible, in laptops,
tablets, cell phones, and smart watches. But most are invisible,
like those in appliances, cars, medical equipment, transportation
systems, power grids, and weapons. We never see the myriad
computers that quietly collect, share, and sometimes leak vast
amounts of personal data about us. Through computers, governments
and companies increasingly monitor what we do. Social networks and
advertisers know far more about us than we should be comfortable
with, using information we freely give them. Criminals have
all-too-easy access to our data. Do we truly understand the power
of computers in our world? Understanding the Digital World explains
how computer hardware, software, networks, and systems work. Topics
include how computers are built and how they compute; what
programming is and why it is difficult; how the Internet and the
web operate; and how all of these affect our security, privacy,
property, and other important social, political, and economic
issues. This book also touches on fundamental ideas from computer
science and some of the inherent limitations of computers. It
includes numerous color illustrations, notes on sources for further
exploration, and a glossary to explain technical terms and
buzzwords. Understanding the Digital World is a must-read for all
who want to know more about computers and communications. It
explains, precisely and carefully, not only how they operate but
also how they influence our daily lives, in terms anyone can
understand, no matter what their experience and knowledge of
technology.
An essential guide to recognizing bogus numbers and misleading data
Numbers are often intimidating, confusing, and even deliberately
deceptive-especially when they are really big. The media loves to
report on millions, billions, and trillions, but frequently makes
basic mistakes or presents such numbers in misleading ways. And
misunderstanding numbers can have serious consequences, since they
can deceive us in many of our most important decisions, including
how to vote, what to buy, and whether to make a financial
investment. In this short, accessible, enlightening, and
entertaining book, leading computer scientist Brian Kernighan
teaches anyone-even diehard math-phobes-how to demystify the
numbers that assault us every day. With examples drawn from a rich
variety of sources, including journalism, advertising, and
politics, Kernighan demonstrates how numbers can mislead and
misrepresent. In chapters covering big numbers, units, dimensions,
and more, he lays bare everything from deceptive graphs to
speciously precise numbers. And he shows how anyone-using a few
basic ideas and lots of shortcuts-can easily learn to recognize
common mistakes, determine whether numbers are credible, and make
their own sensible estimates when needed. Giving you the simple
tools you need to avoid being fooled by dubious numbers, Millions,
Billions, Zillions is an essential survival guide for a world
drowning in big-and often bad-data.
A brand-new edition of the popular introductory textbook that
explores how computer hardware, software, and networks work
Computers are everywhere. Some are highly visible, in laptops,
tablets, cell phones, and smart watches. But most are invisible,
like those in appliances, cars, medical equipment, transportation
systems, power grids, and weapons. We never see the myriad
computers that quietly collect, share, and sometimes leak personal
data about us. Governments and companies increasingly use computers
to monitor what we do. Social networks and advertisers know more
about us than we should be comfortable with. Criminals have
all-too-easy access to our data. Do we truly understand the power
of computers in our world? In this updated edition of Understanding
the Digital World, Brian Kernighan explains how computer hardware,
software, and networks work. Topics include how computers are built
and how they compute; what programming is; how the Internet and web
operate; and how all of these affect security, privacy, property,
and other important social, political, and economic issues.
Kernighan touches on fundamental ideas from computer science and
some of the inherent limitations of computers, and new sections in
the book explore Python programming, big data, machine learning,
and much more. Numerous color illustrations, notes on sources for
further exploration, and a glossary explaining technical terms and
buzzwords are included. Understanding the Digital World is a
must-read for readers of all backgrounds who want to know more
about computers and communications.
This book explains how today's computing and communications world
operates, from hardware through software to the Internet and the
web. It includes enough detail that you can understand how these
systems work, no matter what your technical background. The social,
political and legal issues that new technology creates are
discussed as well, so you can understand the difficult issues we
face and appreciate the tradeoffs that have to be made to resolve
them. A compact but detailed and thorough explanation of how
computers and communications systems work, for non-technical
readers who want to better understand the world they live in. A
great source for technical readers who want something that will
help their friends and family learn about digital systems.
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