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ICT Class 8 - Memory Storage-Devices Notes

Comprehensive study notes for Class 8 - Memory Storage-Devices olympiad preparation

Memory and Storage Devices

Welcome to the chapter on Memory and Storage Devices for Class 8. In this chapter, you will learn about different types of memory and storage devices used in computers. By the end of this chapter, you will understand how computers store information and the differences between memory and storage!

Introduction

Computers need memory and storage to work. Memory helps the computer run programs, while storage keeps your files and data safe even when the computer is turned off.

Types of Memory

  • RAM (Random Access Memory): Temporary memory used while the computer is working. Data is lost when the computer is switched off.
  • ROM (Read Only Memory): Permanent memory that stores important instructions for the computer. Data is not lost when the computer is switched off.

Types of Storage Devices

  • Hard Disk: Main storage device inside the computer. Stores large amounts of data.
  • SSD (Solid State Drive): Faster and more reliable than hard disks. Used in modern computers.
  • CD/DVD: Optical discs used to store music, videos, and software.
  • Pen Drive/USB Drive: Small, portable device used to transfer and store files.
  • Memory Card: Used in cameras, phones, and tablets to store photos and videos.
  • External Hard Drive: Used to back up and store extra data outside the computer.
  • Cloud Storage: Stores data on the internet. Examples: Google Drive, Dropbox.

Difference Between Memory and Storage

  • Memory (RAM): Temporary, fast, used for running programs.
  • Storage: Permanent, used for saving files and data.

Fun Activity: Find Storage Devices!

Look around your home or school. Can you find a pen drive, CD, or memory card? Ask your teacher or parents to show you how they work!

Summary

  • Memory and storage are important parts of a computer.
  • RAM and ROM are types of memory.
  • Hard disks, SSDs, pen drives, and cloud storage are storage devices.
  • Memory is temporary; storage is permanent.

Practice Questions

  1. Name two types of computer memory.
  2. What is the use of a pen drive?
  3. Which device is faster: SSD or hard disk?
  4. What is cloud storage?
  5. Is RAM permanent or temporary?

Challenge Yourself

  • List three devices you use to store photos or music.
  • Draw and label any two storage devices.

Did You Know?

  • The first hard disk could store only 5 MB of data!
  • Cloud storage lets you access your files from anywhere in the world.

Glossary

  • Memory: Temporary space for running programs.
  • Storage: Permanent space for saving files.
  • RAM: Random Access Memory.
  • ROM: Read Only Memory.
  • SSD: Solid State Drive.
  • Cloud Storage: Saving data on the internet.

Answers to Practice Questions

  1. RAM and ROM.
  2. To store and transfer files.
  3. SSD.
  4. Storage on the internet.
  5. Temporary.

Memory and storage help computers work and save your important files. Use them wisely!

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