Understanding the Role of Computers and Humans in Information Processing, Slides of Fundamentals of E-Commerce

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INFORMATION

TECHNOLOGY,

THE INTERNET,

AND YOU

Lecture Objectives

Basic Computing Concepts

Basic Working of a Computer System Introducing a Problem Analogy: Human & Computer

Defining Information Processing Cycle Introducing Information Systems Explain the five parts of an information system

Introducing Computers (contd..)

What a

Problem

is?

A problem requires some unprocessed facts (

data

) converted into useful results

information

For every problem, there exists a step-by-stepmethod (

algorithm

) to do this conversion

Muhammad

Ali Al-Hasan

Hashem

Husain

Data Values (StudentScores)

AveragingTechnique

Problem Algorithm

Average=73.

Processed Result

Problem: What will the average score in “math exam” in a class having 4 students,whose names & scores are as follows:Muhammad,

Ali Al-Hasan,

Hashem,

Hussain,

Computers: A more efficient Problem Solver

Muhammad

Ali Al-Hasan

Hashem

Husain

Average=73.

AveragingTechnique (Computer

Software)

Why to prefer Computers?

Speed

Capable of processing jobs in millionth of seconds

Accuracy

Capable of performing the work with incomparable accuracy

Unlimited memory/ working capability

Don’t have any limitation in working continuous hours (forlong) or memorizing the contents

Information Processing Cycle

Get initialData requiredfor problemsolution

Get an algorithmfor solvingproblem at hand

Process initial databy following thealgorithm steps

DisplayResult to theuser

GenerateProblemResult

Store Resultpermanently

Introducing an Information System

A SYSTEM

is a collection of many inter-

related/ interacting objects working togethertoward a common goal.