ch-2 information technology

8/18/2019 Ch-2 Information Technology

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Chapter 2Information Technology


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Objectives

Explain the five parts of an information system:people, procedures, software, hardware, and data.

Distinguish between system software andapplication software.

Discuss the three kinds of system softwareprograms.

Define data and how data are stored.


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Introduction

Computer competency refers to acquiringcomputerrelated skills

!icrocomputers are common tools in all areas oflife

"ebbased courses provide alternatives for people who are homebound or work odd hours

#he "eb provides new ways to communicate, tofind people with similar interests, and to purchasegoods


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INFORMTION T!C"NO#O$% &IT'

$nformation technology is the application ofcomputers and telecommunicationsequipment to store, retrieve, transmit and

manipulate data.


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INFORMTION T!C"NO#O$% &IT'

%pplications of $nformation #echnology &$#'include many fields such as:

Education( electronic libraries) e*learning

Entertainment( streaming videos) online gaming(usiness( online stores) online ban+ing

Communication( video calls) e*mails


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INFORMTION ,%,T!M

$nformation system is a system that collects)processes) analy-es and stores information.


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/arts of an Information ,ystem

#here are five parts of an information system:

).*eople

+.*rocedures

.-oftware./ardware

0.Data


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0./eople

*eople are professional and the end users.

!ost important part of any system

Contact is …

Direct $ndirect

Computer uses

(usiness 1 Entertainment

Education 1 !edicine


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2./rocedure

*rocedures are the set of rules or guidelinesfor people to follow when using software,hardware and data.


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1.,oftare

-oftware is another name for programs

#wo ma2or kinds of software

-ystem -oftware

%pplication -oftware


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,ystem ,oftare

% collection of programs – not a single program $ncludes 3perating -ystem software, 4tilities, and Device Drivers

Enables the application software to interact with thehardware, and helps the computer manage its resources

#wo bestknown operating systems for microcomputers are "indows 5 and !ac 3- 6


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pplication ,oftare

-oftware which is designed for end users are calledapplication software.

#wo ma2or categories

(asic applications

-peciali7ed applications


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3."ardare

/ardware is the physical parts of the computeritself, and all of its support equipment. 8orexample C*4 input 9 output devices, storagedevices and communication devices.


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4.5ata

5ata are facts that are used by programs to produce usefulinformation. #i+e programs) data are generally stored inmachine*readable form on dis+ or tape until the user needsthem.

*rocessed data becomes informationDigital data is stored electronically in files.


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4.5ata

#here are four common types of files &data files':

%.Document 8iles: are created by ord processors to savedocuments.

(. "orksheet 8iles: are created by electronic spread sheetsto analy-e budgets and calculations.

C.Database 8iles: are created by database managementprograms hich are used to store data in organi-ed form.

D.*resentation 8iles: are created by presentation graphicsprograms to save presentation materials.

ch-2 information technology

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