01 iec t1_s1_plt_session_01

Installing WindowsLogic and Techniques
Programming XP Professional Using Attended Installation
Rationale

The Programming Logic and Techniques (PLT) module is
positioned as the entry point into this curriculum. Since this
curriculum is designed to cater to aspiring software
professionals, a strong foundation in programming
approaches and application of logic was found essential
and was recommended by the industry.
In the OOPs using C# module the students will be required
to write programs involving the use of programming
constructs. The PLT module, apart from teaching problem
solving technique like flowcharting, will also prepare the
students for the OOPs using C# module by developing the
student’s ability to study, solve and represent the logic of
the problems.

Ver. 1.0 Session 1 Slide 1 of 20

Objectives

In this session, you will learn to:
Identify input, process, and output
Describe programs
Problem-solving techniques


Phases

Activities can be broken into separate phases:
The first phase is called the input phase.
The second phase is called the process phase.
The last phase is called the output phase.


Input-Process-Output Cycle

The cycle of activities performed by a computer is referred
to as the Input-Process-Output cycle or the I-P-O cycle.
A computer consists of several components.
Each component participates in either one of the input,
process, or output phases.


Programs

A computer is designed to accept input, process it, and
generate output.
A set of instructions to perform a task is called a program.
A number of programs together form an application.


Flowcharts

A flowchart is a graphical representation of the steps to be
followed for solving a problem.
It consists of a set of symbols.
Each symbol represents a specific activity.


Symbols Used in Flowcharts

Symbol Activity

Input

Processing

Output

Decision

Subroutine


Symbols Used in Flowcharts (Contd.)

Symbol Activity

Flow lines

Terminator

On page connector

Off page connector

Annotation


Just a minute

Match the following verbs with appropriate symbols.
Get, Write, Stop, Add, Start, Multiply, Read, Subtract, Divide,
Display, Input, Output, If
S. No. Symbol Activity

1.

2.

3.

start

4.

5.


Just a minute (Contd.)

Answer:
1. If
2. Add, Multiply, Subtract, Divide
3. Get, Read, Input
4. Start, Stop
5. Write, Display, Output


Drawing Simple Flowcharts

Example:
Flowchart for preparing tea Start

The Steps for Preparing tea

Input Water, Sugar,
Tea Leaves, and Milk

Boil the Ingredients

Tea is Prepared

Stop


Drawing Simple Flowcharts (Contd.)

Example:
Flowchart for manipulating numbers

Start

Get a Number

Add 1 to the Number

Display the Number

Stop



Example:
The value of sale made is calculated as the number of units
sold multiplied by the price per unit. Draw a flowchart to
calculate and print the sale value.



Example (Contd.):
Start

Input Units Sold

Input Unit Price

Multiply Units Sold
By Unit Price

Print Total Sale
Value

Stop



Exercises


Exercise 1

Draw a flowchart to represent the procedure of admission of
a student to NIIT.


Exercise 2

Rearrange the following steps in the order of correct
sequence to add two numbers and draw a flowchart for the
same:
1. Get the First Number
2. Display the Result
3. Stop
4. Add the Two Numbers
5. Get the Second Number
6. Start


Exercise 3

Draw a flowchart to accept five numbers and display the
sum of the numbers.


Exercise 4

Draw a flowchart to input any number, multiply it by 2, and
display the result.


Summary

In this session, you learned that:
The cycle of activities performed by a computer follows the
Input-Process-Output cycle.
A set of instructions to perform a particular job is called a
program.
A flowchart is a graphical representation of the steps to be
followed for solving a problem.
A flowchart consists of a set of symbols, where each symbol
represents a specific activity.


01 iec t1_s1_plt_session_01

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01 iec t1_s1_plt_session_01