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Digital techniques__Logic Gates











  • OR operation represents addition, AND operation represents multiplication. 
  • NOR is opposite of OR operation. it is NOT OR that is complement of OR operation. 
  • similarly NAND operation is opposite of AND operation. it is NOT AND that is complement of AND operation.
  •  EXOR is exclusive OR. it produces low output for similar input and high output for dissimilar input. 
  • likewise EXNOR is exclusive NOR gate produces high output for similar input and low output for dissimilar inputs. 

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