CBSE Class 8 Computer Science Algorithm Notes

Download the latest CBSE Class 8 Computer Science Algorithm Notes in PDF format. These Class 8 Computer Science revision notes are carefully designed by expert teachers to align with the 2025-26 syllabus. These notes are great daily learning and last minute exam preparation and they simplify complex topics and highlight important definitions for Class 8 students.

Chapter-wise Revision Notes for Class 8 Computer Science Algorithm

To secure a higher rank, students should use these Class 8 Computer Science Algorithm notes for quick learning of important concepts. These exam-oriented summaries focus on difficult topics and high-weightage sections helpful in school tests and final examinations.

Algorithm Revision Notes for Class 8 Computer Science

Developing algorithm to solve particular problem
 
In mathematics and computer science, an algorithm is a step-by-step procedure for calculations. Algorithms are used for calculation, data processing, and automated reasoning.Algorithms resemble recipes. Recipes tell you how to accomplish a task by performing a number of steps.
For example, to bake a cake the steps are: preheat the
oven; mix flour, sugar, and eggs thoroughly; pour into a baking pan; and so forth.
 
Goals of Algorithm Study
 
• To develop framework for instructing computer to perform tasks
 
• To introduce notion of algorithm as means of specifying how to solve a problem
 
• To introduce and appreciate approaches for defining and solving very complex tasks in terms of simpler tasks;
 
Simple Questions based on Algorithm
 
Algorithm: Calling a friend on the telephone

Input: The telephone number of your friend.

Output: None
 
Steps:

1. Pick up the phone and listen for a dial tone
 
2. Press each digit of the phone number on the phone
 
3. If busy, hang up phone, wait 5 minutes, jump to step 2
 
4. If no one answers, leave a message then hang up
 
5. If no answering machine, hang up and wait 2 hours, then jump to step 2
 
6. Talk to friend
 
7. Hang up phone
 
Algorithm to create Maggie noddle:

Step 1: Start

Step 2: Take pan with water

Step 3: Put pan on the burner

Step 4: Switch on the gas/burner

Step 5: Put magi and masala

Step 6: Give two minutes to boil

Step 7: Take off the pan

Step 8: Take out the magi with the help of fork/spoon

Step 9: Put the Maggi on the plate and serve it

Step 10: Stop.
 
Algorithm: To find (a + b)2=(a + b)* (a + b)

Input: Two numbers a and b.

Output: Result of (a + b)2
 
Steps:

1. Take numbers a, b, c.
 
2. Input the values of a and b

3. C=a+b

4. Print c*c

Algorithm: To find Perimeter of rectangle

Input: Two numbers l and b.

Output: Result l*b

Steps:

  1. Take numbers l, b, c, d.
  1. Input the values of l and b
  1. c=l*b
  1. d=2*c
  1. Print d

Conditions in Algorithm

Algorithm: To check whether a person can vote or not

Input: A number age.

Output: Yes or No

Steps:

1. Take a number age.

2. Input the age of the person

3. If(age>=18) goto step 4

           Else

        Goto step 5

4. Print “You can vote”

5. Print “You can’t vote”

Algorithm: To give a bonus of Rs 1000 to those employees whose salary is more than Rs5000

Input: Salary.

Output: New Salary

Steps:

1. Take numbers salary and total.

2. Input the salary of the person

3. If(salary>=5000) goto step 4

              Else

          Goto step 5

4. total=salary+1000

5. total=salary+0

6. Print total

SUMMARY

1. An algorithm is a step-by-step procedure for calculations.

2. To develop framework for instructing computer to perform tasks os one of the goal of Algorithm.

EXERCISES

A. Short Answer Question

1. What is an algorithm?

2. Write few goals of an algorithm.?

3. Write an algorithm to find Area of square?

 

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CBSE Class 8 Computer Science Algorithm Notes

Students can use these Revision Notes for Algorithm to quickly understand all the main concepts. This study material has been prepared as per the latest CBSE syllabus for Class 8. Our teachers always suggest that Class 8 students read these notes regularly as they are focused on the most important topics that usually appear in school tests and final exams.

NCERT Based Algorithm Summary

Our expert team has used the official NCERT book for Class 8 Computer Science to design these notes. These are the notes that definitely you for your current academic year. After reading the chapter summary, you should also refer to our NCERT solutions for Class 8. Always compare your understanding with our teacher prepared answers as they will help you build a very strong base in Computer Science.

Algorithm Complete Revision and Practice

To prepare very well for y our exams, students should also solve the MCQ questions and practice worksheets provided on this page. These extra solved questions will help you to check if you have understood all the concepts of Algorithm. All study material on studiestoday.com is free and updated according to the latest Computer Science exam patterns. Using these revision notes daily will help you feel more confident and get better marks in your exams.

Where can I download the latest PDF for CBSE Class 8 Computer Science Algorithm Notes?

You can download the teacher prepared revision notes for CBSE Class 8 Computer Science Algorithm Notes from StudiesToday.com. These notes are designed as per 2025-26 academic session to help Class 8 students get the best study material for Computer Science.

Are these Computer Science notes for Class 8 based on the 2026 board exam pattern?

Yes, our CBSE Class 8 Computer Science Algorithm Notes include 50% competency-based questions with focus on core logic, keyword definitions, and the practical application of Computer Science principles which is important for getting more marks in 2026 CBSE exams.

Do these Class 8 notes cover all topic-wise concepts for Computer Science?

Yes, our CBSE Class 8 Computer Science Algorithm Notes provide a detailed, topic wise breakdown of the chapter. Fundamental definitions, complex numerical formulas and all topics of CBSE syllabus in Class 8 is covered.

How can I use CBSE Class 8 Computer Science Algorithm Notes for quick last-minute revision?

These notes for Computer Science are organized into bullet points and easy-to-read charts. By using CBSE Class 8 Computer Science Algorithm Notes, Class 8 students fast revise formulas, key definitions before the exams.

Is there any registration required to download Class 8 Computer Science notes?

No, all study resources on StudiesToday, including CBSE Class 8 Computer Science Algorithm Notes, are available for immediate free download. Class 8 Computer Science study material is available in PDF and can be downloaded on mobile.