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Prof.S.G.Isave, Assistant Professor, Tilak College of Education, Pune-India Storage Devices
Storage Devices <ul><li>Primary Storage   </li></ul><ul><li>ROM Chips </li></ul><ul><li>RAM  Chips </li></ul><ul><li>Secon...
Primary Storage Devices <ul><li>ROM – </li></ul><ul><li>Read Only Memory. </li></ul><ul><li>Permanent memory. </li></ul><u...
Secondary Storage capacity <ul><li>Compact Disc – 700MB </li></ul><ul><li>Digital Versatile Disc –  4 to 8GB </li></ul><ul...
OPTICAL DEVICES- CD/DVD/BRD No  Yes No  Edit  Re burn  Write  Type  No  No  ROM – Read Only Memory. Yes Yes RW- Rewritable...
MAGNETIC Devices Yes Yes Yes  Edit  Reuse   Write  Type  Yes Yes Memory Card Yes Yes Pen Drive Yes  Yes  Hard disc
Use of Optical Devices <ul><li>CD/DVD/BRD (R)  – To store data permanently. </li></ul><ul><li>CD/DVD/BRD (RW)  – to store ...
Use of Magnetic Devices <ul><li>Hard disc  – Essential part of a computer. </li></ul><ul><li>Useful to store system, all a...
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Memory devices

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Memory devices

  1. 1. Prof.S.G.Isave, Assistant Professor, Tilak College of Education, Pune-India Storage Devices
  2. 2. Storage Devices <ul><li>Primary Storage </li></ul><ul><li>ROM Chips </li></ul><ul><li>RAM Chips </li></ul><ul><li>Secondary Storage – </li></ul><ul><li>1. Optical – </li></ul><ul><li>CD/DVD/BRD </li></ul><ul><li>2. magnetic – </li></ul><ul><li>Pen Drive </li></ul><ul><li>Memory Card </li></ul><ul><li>Hard Disc </li></ul>
  3. 3. Primary Storage Devices <ul><li>ROM – </li></ul><ul><li>Read Only Memory. </li></ul><ul><li>Permanent memory. </li></ul><ul><li>Non-volatile memory. </li></ul><ul><li>Can’t be edited. </li></ul><ul><li>Stores important program from system software, regarding functioning of computer. (Booting) </li></ul><ul><li>RAM – </li></ul><ul><li>Random Access Memory. </li></ul><ul><li>Volatile memory. </li></ul><ul><li>Temporary memory. </li></ul><ul><li>Holds data up to saving. </li></ul><ul><li>Bring required programs when user opens a file. </li></ul>
  4. 4. Secondary Storage capacity <ul><li>Compact Disc – 700MB </li></ul><ul><li>Digital Versatile Disc – 4 to 8GB </li></ul><ul><li>Blue Ray Disc – 25 GB </li></ul><ul><li>Hard Disc – 5 to 500 GB </li></ul><ul><li>Pen Drive – 2 GB to 8GB + </li></ul><ul><li>Memory Card – 2GB to 8GB + </li></ul>
  5. 5. OPTICAL DEVICES- CD/DVD/BRD No Yes No Edit Re burn Write Type No No ROM – Read Only Memory. Yes Yes RW- Rewritable. Limited Yes R- Recordable
  6. 6. MAGNETIC Devices Yes Yes Yes Edit Reuse Write Type Yes Yes Memory Card Yes Yes Pen Drive Yes Yes Hard disc
  7. 7. Use of Optical Devices <ul><li>CD/DVD/BRD (R) – To store data permanently. </li></ul><ul><li>CD/DVD/BRD (RW) – to store data temporarily, to carry data. </li></ul><ul><li>CD/DVD/BRD (ROM) – software, educational program, movies, drivers, games etc. </li></ul>
  8. 8. Use of Magnetic Devices <ul><li>Hard disc – Essential part of a computer. </li></ul><ul><li>Useful to store system, all application software, drivers, data and information. </li></ul><ul><li>Mass Storage Devices – </li></ul><ul><li>To carry data. </li></ul><ul><li>To store data temporarily. </li></ul><ul><li>Can carry all type of data i.e. software, music, video file, presentation, images, photos </li></ul>
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