CBSE Class 8 Computer Science Algorithm Notes

Download CBSE Class 8 Computer Science Algorithm Notes in PDF format. All Revision notes for Class 8 Computer Science have been designed as per the latest syllabus and updated chapters given in your textbook for Computer Science in Class 8. Our teachers have designed these concept notes for the benefit of Class 8 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 8 Computer Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 8 Computer Science given on studiestoday

Revision Notes for Class 8 Computer Science Algorithm

Class 8 Computer Science students should refer to the following concepts and notes for Algorithm in Class 8. These exam notes for Class 8 Computer Science will be very useful for upcoming class tests and examinations and help you to score good marks

Algorithm Notes 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

We hope you liked the above notes for topic Algorithm which has been designed as per the latest syllabus for Class 8 Computer Science released by CBSE. Students of Class 8 should download and practice the above notes for Class 8 Computer Science regularly. All revision notes have been designed for Computer Science by referring to the most important topics which the students should learn to get better marks in examinations. Our team of expert teachers have referred to the NCERT book for Class 8 Computer Science to design the Computer Science Class 8 notes. After reading the notes which have been developed as per the latest books also refer to the NCERT solutions for Class 8 Computer Science provided by our teachers. We have also provided a lot of MCQ questions for Class 8 Computer Science in the notes so that you can learn the concepts and also solve questions relating to the topics. We have also provided a lot of Worksheets for Class 8 Computer Science which you can use to further make yourself stronger in Computer Science.

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