This document discusses different types of computer storage devices. It begins with a brief history of storage technologies like punch cards and magnetic tape. It then categorizes storage devices as either primary or secondary. Primary storage includes RAM and ROM, while secondary storage includes hard disks, CDs, DVDs, and other removable media. The document focuses on hard disks, describing their components like platters, arms, heads, and how data is stored in tracks and sectors. Other modern storage discussed includes diskettes, flash memory cards, and USB devices.

1. Storage Devices
Of
Computer
Presented by:
RIZWAN QAMAR

2. Introduction
 What are storage devices
 How they works
 There types
 Methodology
 Brief History
 Some famous Devices

3. Storage Devices History
 Punch Cards
 Magnetic tape (type 1)
 Magnetic tape (type 2)

4. Types Of Storage Devices
 Primary Storage Devices
RAM
ROM,PROM,EPROM,EEPROM
 Secondary Storage Devices
Hard disk, CD, DVD etc

5. Modern Storage Devices
 Diskettes
Floppy Disk
Hard Disk
Optical Disk
CD-ROM
DVD-ROM
CD-R
CD-RW

6. Other Storage Devices
 Flash Memory cards
 ZIP cards
 Other portable Devices
 USB Devices

7. Hard Disk
 Dynamic
 More Frequent In use
 Reliable
 Heart Of Every Computer

8. The HardDisk

9. Components Of HD
 Electronic Board  An Internal View

10. Components Of HD
 Beneath The Board
Platter
Arm

11. Components Of HD
Magnetic
 Multiple platter Plates

12. Components Of HD
Multiple
 More Than One
Heads
Heads

13. Components Of HD
 Simplest Form Of HD

14. Data Stores On HD
 Tracks On Hard Disk
Tracks Sectors

15. RAM

16. ROM

17. Flash Memory Stick

18. BIOS

19. Thanks!!