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Computing - Answers Needed

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I need answers to following questions:

  • How memory is classified on basis of speed?
  • Differences b/w main and secondary memory?
  • Difference b/w SRAM and DRAM?
  • Define Cache and its use? [3]
  • Whats PROM?
  • Whats EPROM?
  • Whats EEPROM?
  • How data is removed from EEPROM?
  • What is data-rate?
  • What is seek time?
  • One nibble = ____ ?
  • What is access time?
  • What is transfer delay?
  • Explain Two's compliment?
  • What is drum plotter?
  • Where electrostatic printer is used?
  • How data is stored and retrieved from a hard disk?
  • What is Flash Memory? Explain its importance?
  • Differences between DIRECT ACCESS MEMORY, SEQUENTIAL ACCESS MEMORY ?
  • What is Auxiliary Storage?
 
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