computer concepts 1
TRANSCRIPT
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Introduction to
Computers
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The Digital Revolution
Where can you find computers?
Computers are everywhere
p. 1.2 Fig. 1-1
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Objectives
Define the term computer
Identify the components of acomputer
Explain why a computer is apowerful tool
p. 1.2
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What Is a Computer?
What is a computer? An electronic machine,
operating under thecontrol of instructions
stored in its own memory• accepts data
• manipulates the dataaccording to specifiedrules
• produces results
• stores the results forfuture use
p. 1.4
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InputAny data or
instructions you
enter into a
computer
Output
Data that has
een processed
into information!torageArea in a
computer that
can hold data
and information
for future use
Communication
"he capaility of
communicatingwith other
computers
What is theinformation
processin
gcycle?
What is a Computer?
p. 1.5
#rocess
$anipulate theinput %data& to
produce output
%information&
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!oftware"he series of
instructions that
tells the hardware
how to performtas's
(ardware
"he electric,
electronic, andmechanical e)uipment
that ma'es up a
computer
What is a Computer?
What are hardware and software?
p. 1.4
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The Components of a
Computer
What are common computer hardware components?
printer
scanner
speaker PC camera
microphonedigital camera
system unit
keyboard
modem
speaker
monitor
mouse
p. 1.5 Fig. 1-3
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p. 1.5 Fig. 1-3
The Components of a
Computer
What is an input device? Any hardware component that allows a user to
enter data and instructions into a computer
Click to view Web Link
then click Input Devices
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p. 1.5 Fig. 1-3
The Components of a
Computer
What is an input device? Any hardware component that allows a user to
enter data and instructions into a computer
scanner
microphone
keyboard
mouse
PC camera
digital
camera
Click to view Web Link
then click Input Devices
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p. 1.6 Fig. 1-3
The Components of a
Computer
What is an output device? Any hardware component that can convey
information to a user
Click to view Web Link
then click utput Devices
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p. 1.6 Fig. 1-3
The Components of a
Computer
What is an output device? Any hardware component that can convey
information to a user
Click to view Web Link
then click utput Devices
printer
monitor speakers
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External Device
Also called a
peripheral
Attaches to the
system unit
Internal
Component
*esides inside thesystem unit
The Components of a
Computer
What are internal components and external devices?
p. 1.6
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The Components of a
Computer
What is storage? (olds data, instructions, and information for future use
!torage Device
• *ecords and
retrieves items to
and from a storage
medium
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!peed+illions of
operations cane carried out
in a singlesecond
*eliaility
Dependale ecause
components have alow failure rate so
they produce
consistent results
p. 1.!
Why Is a Computer So
o!erful?What characteristics ma'e a computer powerful?
Communications"wo connected
computers can share
stored data, instructions,
and information
!torage
Enormous amounts of
data can e stored and
made availale for
processing anytime it isneeded
Accuracy
If data is entered correctlyand program wor's properly,
the results are errorfree