EmbeddedSystemDesign《嵌入式系统设计》课后答案(英文版)(6)

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1.11Foraparticularproduct,youdeterminetheNREcostandunitcosttobethefollowing

forthethreelistedICtechnologies:FPGA:($10,000,$50);ASIC:($50,000,$10);VLSI:($200,000,$5).Determineprecisevolumesforwhicheachtechnologyyieldsthelowesttotalcost.

Totalcost=NREcost+(unitcost*#unitsproduced)

FPGA=10,000+50x

ASIC=50,000+10x

VLSI=200,000+5x

10,000+50x=50,000+10x

40x=40,000

x=1,000

50,000+10x=200,000+5x

5x=150,000

x=30,000technology

FPGA

ASIC

VLSIamount<1,000units1,000-30,000units>30,000units

1.12Giveanexampleofarecentconsumerproductwhoseprimemarketwindowwasonly

aboutoneyear.

Note:Answerswillvary.

1.13Createanequationfortotalprofitthatcombinestime-to-marketandNRE/unitcost

http://www.77cn.com.cnetherevenuemodelofFigure1.4(b).Assumea100-monthproductlifetime,withpeakrevenueof$100,http://www.77cn.com.cnpareuseofageneral-purposeprocessorhavinganNREcostof$5,000,aunitcostof$30,andatime-to-marketof12months(soonly88monthsoftheproduct’slifetimeremain),withuseofasingle-

purposeprocessorhavinganNREcostof$20,000,aunitcostof$10,andatime-to-marketof24months.Assumetheamountaddedtoeachunitforprofitis$5.

4EmbeddedSystemDesign

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