SECONDARY STORAGE DEVICES Section I : Chapter No. 4
What are Basic Hardware  of a Personal Computer? <ul><li>Monitor  </li></ul><ul><li>Motherboard  </li></ul><ul><li>CPU (Mi...
Classification of Hardware Hardwares of Personal Computers Figure 2. Classification of Hardware. Input  Devices   1 Proces...
What are Types of Storage Devices? Hardwares of Personal Computers Figure 3. Classification of storage devices. Storage De...
What is Secondary Storage? <ul><li>Secondary storage  is computer memory that is  not directly accessible  to the CPU of a...
Secondary Storage  <ul><li>3.5” Floppy Disk </li></ul><ul><li>Data can be  read or write </li></ul><ul><li>Data capacity: ...
Secondary Storage <ul><li>Hard Disk </li></ul><ul><li>Data can be  read or write </li></ul><ul><li>Speed of disk rotation ...
Secondary Storage Hardwares of Personal Computers CD-Rom CD-R CD-RW Data can be Read only Read but write once Read & write...
Secondary Storage Hardwares of Personal Computers DVD ( Digital Versatile Disk or Digital Video Disk ) DVD-R / DVD+R DVD-R...
What are the Different Between CD and DVD? <ul><li>A compact disc [sometimes spelled  disk ] (CD) is a small, portable, ro...
Secondary Storage Hardwares of Personal Computers Figure 6. A C-R disk. Figure 7. A CD-RW disk.
Secondary Storage Hardwares of Personal Computers Figure 8. A DVD-R disk. Figure 9. A DVD+RW disk.
Secondary Storage <ul><li>USB flash drives  </li></ul><ul><li>They are flash memory data storage devices integrated with a...
Secondary Storage <ul><li>Memory Cards </li></ul><ul><li>e.g. SD card, CF card, xD card, Microdrive, Memory Stick </li></u...
Various Types of Memory Cards Hardwares of Personal Computers Figure 12. Various types of memory cards. SM Card SD Card CF...
THANK YOU Hardwares of Personal Computers Suhas Subramanian Mangesh Tilve Anita Rajan Usha Sawant Rachna Amarnani Shilpa S...
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Secondarystoragedevice

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Information regarding Secondary Storage devices

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Secondarystoragedevice

  1. 1. SECONDARY STORAGE DEVICES Section I : Chapter No. 4
  2. 2. What are Basic Hardware of a Personal Computer? <ul><li>Monitor </li></ul><ul><li>Motherboard </li></ul><ul><li>CPU (Microprocessor) </li></ul><ul><li>Primary storage (RAM) </li></ul><ul><li>Expansion cards </li></ul><ul><li>Power supply </li></ul><ul><li>Optical disc drive </li></ul><ul><li>Secondary storage (Hard disk) </li></ul><ul><li>Keyboard </li></ul><ul><li>Mouse </li></ul>Hardwares of Personal Computers Figure 1. Basic hardware of a PC. (Wikipedia, 2007a)
  3. 3. Classification of Hardware Hardwares of Personal Computers Figure 2. Classification of Hardware. Input Devices 1 Processing Unit 2 Storage Devices 3 Output Devices 4 Key: Data flow
  4. 4. What are Types of Storage Devices? Hardwares of Personal Computers Figure 3. Classification of storage devices. Storage Devices Primary Storage Secondary Storage Read-Only Memory (ROM) Random-Access Memory (RAM)
  5. 5. What is Secondary Storage? <ul><li>Secondary storage is computer memory that is not directly accessible to the CPU of a computer, requiring the use of computer's input/output channels. </li></ul><ul><li>It is used to store data that is NOT in active use. </li></ul><ul><li>It is usually slower than primary storage but it always has higher storage capacity. </li></ul><ul><li>It is non-volatile. Data remains unchanged even after switching off the computer. </li></ul>Hardwares of Personal Computers
  6. 6. Secondary Storage <ul><li>3.5” Floppy Disk </li></ul><ul><li>Data can be read or write </li></ul><ul><li>Data capacity: 1.44 MB </li></ul>Hardwares of Personal Computers Figure 4. A floppy disk.
  7. 7. Secondary Storage <ul><li>Hard Disk </li></ul><ul><li>Data can be read or write </li></ul><ul><li>Speed of disk rotation usually 7200 rpm </li></ul><ul><li>Data capacity : 80GB, 160GB, 250GB, 300GB etc </li></ul>Hardwares of Personal Computers Figure 5. A Hard disk.
  8. 8. Secondary Storage Hardwares of Personal Computers CD-Rom CD-R CD-RW Data can be Read only Read but write once Read & write Data capacity (MB) 650 650 650
  9. 9. Secondary Storage Hardwares of Personal Computers DVD ( Digital Versatile Disk or Digital Video Disk ) DVD-R / DVD+R DVD-RW / DVD+RW Data can be Read only Read but write once Read & write Data capacity (GB) Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5
  10. 10. What are the Different Between CD and DVD? <ul><li>A compact disc [sometimes spelled disk ] (CD) is a small, portable, round medium made of molded polymer for electronically recording, storing, and playing back audio, video, text, and other information in digital form </li></ul><ul><li>DVD is an optical disc technology with a 4.7 gigabyte storage capacity on a single-sided, one-layered disk, which is enough for a 133-minute movie. DVDs can be single- or double-sided, and can have two layers on each side; a double-sided, two-layered DVD will hold up to 17 gigabytes of video, audio, or other information. This compares to 650 megabyte s (.65 gigabyte) of storage for a CD-ROM disk. </li></ul><ul><li>DVD was originally said to stand for digital video disc , and later for digital versatile disc . </li></ul>Hardwares of Personal Computers
  11. 11. Secondary Storage Hardwares of Personal Computers Figure 6. A C-R disk. Figure 7. A CD-RW disk.
  12. 12. Secondary Storage Hardwares of Personal Computers Figure 8. A DVD-R disk. Figure 9. A DVD+RW disk.
  13. 13. Secondary Storage <ul><li>USB flash drives </li></ul><ul><li>They are flash memory data storage devices integrated with a USB interface. </li></ul><ul><li>They are typically small, lightweight, removable and rewritable . </li></ul><ul><li>Data capacity: 512MB, 1GB, 2GB, 4GB, 8 GB, 16GB etc </li></ul><ul><li>USB flash drives also are called thumb drives, jump drives, pen drives, key drives, tokens, or simply USB drives . </li></ul>Hardwares of Personal Computers Figure 10. An USB flash drive.
  14. 14. Secondary Storage <ul><li>Memory Cards </li></ul><ul><li>e.g. SD card, CF card, xD card, Microdrive, Memory Stick </li></ul><ul><li>Data can be read or write </li></ul><ul><li>Data capacity: 512 MB, 1GB, 2GB, 4GB, 16GB etc </li></ul>Hardwares of Personal Computers Figure 11. A SD card.
  15. 15. Various Types of Memory Cards Hardwares of Personal Computers Figure 12. Various types of memory cards. SM Card SD Card CF Card xD card Memory Stick Microdrive
  16. 16. THANK YOU Hardwares of Personal Computers Suhas Subramanian Mangesh Tilve Anita Rajan Usha Sawant Rachna Amarnani Shilpa Shinde
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