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Hardware Memory

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A complete guide providing useful knowledge and tips on hardware and its memory

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Hardware Memory

  1. 2. INTRODUCTION
  2. 3. CLASSIFICATION OF MEMORY
  3. 4. SRAM
  4. 5. DRAM
  5. 6. WORKING MEMORY MODEL
  6. 7. LEVELS OF PROCESSING
  7. 8. RANDOM ACCESS MEMORY(RAM) 1 GB DDR 2 RAM
  8. 9. HIERARCHY OF STORAGE
  9. 10. STORAGE CLASSIFICATION
  10. 11. PRIMARY STORAGE
  11. 12. SECONDARY STORAGE A HARD DISK
  12. 13. TERTIARY STORAGE A TAPE LIBRARY Tertiary storage or tertiary memory , [2] provides a third level of storage. Typically it involves a robotic mechanism which will mount (insert) and dismount removable mass storage media into a storage device according to the system's demands
  13. 14. OFF-LINE STORAGE Off-line storage , also known as disconnected storage , is a computer data storage on a medium or a device that is not under the control of a processing unit . [3] The medium is recorded, usually in a secondary or tertiary storage device, and then physically removed or disconnected .
  14. 15. CHARACTERISTICS OF STORAGE Storage technologies at all levels of the storage hierarchy can be differentiated by evaluating certain core characteristics as well as measuring characteristics specific to a particular implementation
  15. 16. FUNDAMENTAL STORAGE TECH
  16. 17. SEMICONDUCTOR & MAGNETIC Semiconductor memory uses semiconductor -based integrated circuits to store information. A semiconductor memory chip may contain millions of tiny transistors or capacitors . Both volatile and non-volatile forms of semiconductor memory exist . Magnetic storage uses different patterns of magnetization on a magnetically coated surface to store information. Magnetic storage is non-volatile . The information is accessed using one or more read/write heads which may contain one or more recording transducers.
  17. 18. OPTICAL Optical storage , the typical Optical disc , stores information in deformities on the surface of a circular disc and reads this information by illuminating the surface with a laser diode and observing the reflection . CD , CD-ROM , DVD , Blu-ray Disc , HD DVD : Read only storage, used for mass distribution of digital information (music, video, computer programs) CD-R , DVD-R , DVD+R : Write once storage, used for tertiary and off-line storage CD-RW , DVD-RW , DVD+RW , DVD-RAM : Slow write, fast read storage, used for tertiary and off-line storage
  18. 19. PAPER
  19. 20. UNCOMMON METHODS

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