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IMS method 1
INTRODUCTION TO IMS METHOD FOR THE
THRESHOLD REALIZATION
Implied Minterm Structure (IMS) method
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IMS method 2
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IMS method 3
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IMS method 4
IMS method• Write down the minterms
• These should be positive and ordered , ri>=N(1)/N(0) , this ratio in each column should be r1>=r2>=r3>=r4>=r5>=1
• Write it down in the IMS chart
• Select Nested F’s
• Realize each zone by Dertouzo’s method
• Connect with the help of OR gate(I/p +1,-1)
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IMS method 5
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IMS method 6
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IMS method 7
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IMS method 8
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IMS method 9
Final Realization
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IMS method 10
Finding weights and Threshold for F1:
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IMS method 11
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IMS method 12
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IMS method 13
Finding weights and Threshold for F2:
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IMS method 14
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IMS method 15
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IMS method 16
Finding weights and Threshold for F3:
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IMS method 17
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IMS method 18
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IMS method 19
Finding weights and Threshold for F4:
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IMS method 20
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IMS method 21
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IMS method 22
Example: (Modifying the function)
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IMS method 23
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IMS method 24
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IMS method 25
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IMS method 26
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IMS method 27
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IMS method 28
Example:
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IMS method 29
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IMS method 30
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IMS method 31
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IMS method 32
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IMS method 33
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IMS method 34
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IMS method 35
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IMS method 36
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IMS method 37
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IMS method 38
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IMS method 39
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IMS method 40
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IMS method 41
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IMS method 42
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IMS method 43
Final realization
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IMS method 44
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IMS method 45
Example:
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IMS method 46
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IMS method 47
Threshold Gate Realization
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IMS method 48
Similarly,
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IMS method 49
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IMS method 50
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IMS method 51
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IMS method 52
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IMS method 53
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IMS method 54
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IMS method 55
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IMS method 56
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IMS method 57
Realization of theDifference
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IMS method 58
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IMS method 59
Realization of Borrow
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IMS method 60
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IMS method 61
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IMS method 62
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IMS method 63
Complete realization of an Arithmetic Cell