1. Programming Logic n Techniques
Algorithm, Flow chart,
Standard flowchart symbols

2. PLT ( Programming logic techniques )
Solving problem is the core of computer science
PLT is an introduction to comp-based problem solving techniques
programming solving techniques that aid programmer and computer scientists
( core = important )
( aid = help )
Core = importance, aid = help

3. Local approach for prob. solving
PLT provides a systematic approach to solve a prob. In step by step process

4. Pseudo code
Pseudo code is an artificial and informal language that helps programmers to develop algorithm

5. Algorithm
Algorithm is a method of representing the step-by-step logical procedure for solving a problem

6. Features of Algorithm
Algorithms make our work easy in solving the problems
Every step is clearly described
Data flow is processed in Top – Down approach
Algorithms can easily be converted into flow charts
Errors can be easily detected
EX :-
Write down an Algorithm to prepare tea

7. Write an Algorithm to find the sum of 3 numbers
Step1 : Read the numbers a,b,c. Step2 : compute the sum of a,b,c. Step3 : Divide the sum by 3. Step4 : Store the result in variable d. Step5 : Print the value of d. Step6 : End the program.

8. Flowchart
Flowchart is a graphical representation of an algorithm, it is an alternate technique to solve the prob.

9. Features of flowchart
Provides a better way of pictorial representation of algorithm.
Donates the flow of data control.
Problem solving is easy thus save time.
Helps in rectifying the errors easily.

10. Standard Flowchart symbols
Terminal
2) Input /output
3) Process
Start / stop ( or ) Beginning n ending
To give input or to declare output
represent steps in processing of data
( 26 )

11. Standard Flowchart symbols
4) Decision 5) On page Connector 6) Flow Symbols
shows the decision and other processing steps.
Continue the flow on the same page
Donates the direction and order of the steps
( 26 )

12. IMP points to draw Flowchart
FC should be clear, neat N easy to follow
Should be logically correct
Should be verified for validity
directions should be top – down N left / right

13. Limitations of FC Fc’s are difficult to modify
Translation of FC into comp. program Is always not easy
Connectors are used to joint pages

14. Advantages of FC Logic of the prog. Is clearly declared
easy to follow the logic
Draw a FC to prepare a cup of tea

15. Add water, sugar milk , tea powder in a container
Start
Add water, sugar milk , tea powder in a container
Boil the contents
Pour coffee in a cup
Stop ( 27 )