Computer Concepts 1

7/25/2019 Computer Concepts 1

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Introduction to

Computers



The Digital Revolution

Where can you find computers?

Computers are everywhere

p. 1.2 Fig. 1-1



Objectives

Define the term computer

Identify the components of acomputer

Explain why a computer is apowerful tool

p. 1.2



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



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&



!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



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



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





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


then click Input Devices



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


then click utput Devices





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


then click utput Devices

printer

monitor speakers



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



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



!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



"ctivity

What additional (1) characteristicdo you think a

POWERFUL COMPUTERmust hae!

" minutes

Computer Concepts 1

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