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Lesson 1 Computers and Computer Literacy
Computer Concepts
BASICS 4th Edition
Wells
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Objectives
Introduction to key terms
Discuss the history of computers
Define the term computer and describe a computer system
we use computers and technology in our daily lives
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Vocabulary
clients
computer
data
desktop computer
electronic communication
embedded computer
extranet
hardware
icon
information
Internet
intranet
mobile devices
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Vocabulary (continued)
network
nodes
personal computers
servers
software
supercomputer
users
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Introducing Computers
Considered one of the most important inventions of
the 20th century, computers have become prevalent
throughout our society.
– Computers are found everywhere—from cell phones with
embedded cameras to computerized components in
automobiles to our ATM machines.
– Computers help us learn about health and medicine, space
and time, and matter and energy, to name just a few topics.
The ways in which a computer can be used are as
limitless as a person's imagination.
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A Brief History of the Computer
Computers were developed in the late 1940s and
early 1950s, and were designed initially for military
and governmental uses.
The microprocessor was developed in 1971 by Dr.
Ted Hoff, who at that time worked for Intel.
Using the microprocessor technology, Steve Jobs
and Steve Wozniak built the first Apple computer.
In 1980, Bill Gates worked with IBM to develop the
disc operating system for the IBM PC.
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A Brief History of the Computer (continued)
Early computers
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Computers and Computer Systems
A computer is an electronic device that receives data (input), processes data, stores data, and produces a result (output).
The instructions and/or programs that control the computer are called software.
The physical parts of the system are called hardware.
A computer processes data and produces information.
The Input, Processing, Storing, and Output sequence is referred to as the information processing cycle.
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Computers and Computer Systems (continued)
Information processing cycle
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How Computers Work
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Computers are not intelligent and do only
what we ask them to do.
Computer benefits: speed, reliability,
accuracy, storage, and communications.
Computer disadvantages: environmental
impact and pollution, violation of privacy,
identity theft, health risks, and outsourcing
of jobs to foreign countries.
