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DerekChiou_EE306_Spring2009_Lecture5

# DerekChiou_EE306_Spring2009_Lecture5 - If(exponent == 0...

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© Derek Click to edit Master subtitle style 2/4/2009 © Derek Chiou : EE306: Lecture 5 306: Logical Equations and Gates Prof. Derek Chiou University of Texas at Austin

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l Recap l Review floating point l Discuss ASCII l Subtracting l Logical Equations l Outline l Floating point with an exponent of all 1s l Truth tables to logical equations l Continuing with gates
Clarification l Positive numbers in all representations (signed magnitude, 1s complement, 2s complement)

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Floating Point Details S Exponent Mantissa (fraction) 1 8 23 If (1<=exponent<=254) then N = (-1)S * 1.fraction * 2 exponent-127

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Unformatted text preview: If (exponent == 0) then N = (-1)S * 0.fraction * 2 -126 If ((exponent == 255) AND (fraction==0) then N = (-1)S * infinity If ((exponent == 255) AND (MSB(fraction)==1) then N = QNaN If ((exponent == 255) AND (MSB(fraction)==0) then N = SNaN OR Gate Real OR Gate Real AND Gate How We Draw Gates More Than 2 Input Gates DeMorgan’s Laws l NOT((NOT(A) AND NOT(B)) = A OR B l Corresponding Law? Decoder Mux 4 Input Mux Truth Tables to Logical Equations l Full adder PLA Structure Storage: RS Latch Storage: RS Latch Gated D Latch Register...
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DerekChiou_EE306_Spring2009_Lecture5 - If(exponent == 0...

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