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L.1 Chapter 1 Solutions L-2
L.2 Chapter 2 Solutions L-7
L.3 Chapter 3 Solutions L-20
L.4 Chapter 4 Solutions L-30
L.5 Chapter 5 Solutions L-46
L.6 Chapter 6 Solutions L-52
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Page 2 of 5
L
Solutions to Case Study
Exercises
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Page 3 of 5
L-2 ■ Appendix L Solutions to Case Study Exercises
Case Study 1: Chip Fabrication Cost
1.1 a.
b.
c. The Sun Niagara is substantially larger, since it places 8 cores on a chip rather
than 1.
1.2 a.
b.
c. $9.38 × .4 = $3.75
d. Selling price = ($9.38 + $3.75) × 2 = $26.26
Profit = $26.26 – $4.72 = $21.54
e. Rate of sale = 3 × 500,000 = 1,500,000/month
Profit = 1,500,000 × $21.54 = $32,310,000
$1,000,000,000/$32,310,000 = 31 months
1.3 a.
b. Prob of one defect = 0.29 × 0.717 × 8 = 0.21
Prob of two defects = 0.292 × 0.716 × 28 = 0.30
Prob of one or two = 0.21 × 0.30 = 0.51
c. 0.718
= .06 (now we see why this method is inaccurate!)
L.1 Chapter 1 Solutions
Yield 1 0.7 × 1.99
4.0 + ------------------------
4–
= = 0.28
Yield 1 0.75 × 3.80
4.0 + ---------------------------
4–
= = 0.12
Yield 1 0.30 × 3.89
4.0 + ---------------------------
4–
= = 0.36
Dies per wafer π × ( ) 30 2⁄ 2
3.89 = ------------------------------ π × 30
sqrt 2( ) × 3.89 – ---------------------------------- 182 33.8 148=–=
Cost per die $500
148 × 0.36 = = -------------------------- $9.38
Yield 1 .7 × 1.86
4.0 ---------------------+
4–
= = 0.32
Dies per wafer π × ( ) 30 2⁄ 2
1.86 = ------------------------------ π × 30
sqrt 2( ) × 1.86 – ---------------------------------- 380 48.9 331=–=
Cost per die $500
331 × .32 = = ----------------------- $4.72
Yield 1 .75 × 3.80 8⁄
4.0 + -------------------------------
4–
= = 0.71
Prob of error 1 0.71– 0.29 = =
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