01 iec t1_s1_plt_session_01

Installing Windows XP Professional Using Attended Installation

Slide 1 of 20Session 1Ver. 1.0

Programming Logic and Techniques

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.

Rationale




In this session, you will learn to:Identify input, process, and output

Describe programs

Problem-solving techniques

Objectives




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.

Phases




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.

Input-Process-Output Cycle




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.

Programs




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.

Flowcharts




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.

4.

5.




Answer:1. If

2. Add, Multiply, Subtract, Divide

3. Get, Read, Input

4. Start, Stop

5. Write, Display, Output

Just a minute (Contd.)




Example:Flowchart for preparing tea

Drawing Simple Flowcharts

Start

Stop

The Steps for Preparing tea

Input Water, Sugar, Tea Leaves, and Milk

Boil the Ingredients

Tea is Prepared




Example:Flowchart for manipulating numbers

Drawing Simple Flowcharts (Contd.)

Start

Stop

Get a Number

Add 1 to the Number

Display the Number




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.






Start

Stop

Input Unit Price

Multiply Units Sold By Unit Price

Print Total Sale Value

Input Units Sold

Example (Contd.):




Exercises




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

Exercise 1




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 2




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

Exercise 3




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

Exercise 4




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 aprogram.

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.

Summary

01 iec t1_s1_plt_session_01

Technology

attended installationsymbols

attended installationjust

attended installationexercise

input phase

process phase

output phases

andgenerate output

tea input water