EmbeddedSystemDesign《嵌入式系统设计》课后答案(英文版)(3)

北京航空航天出版社

CHAPTER1:Introduction

1.1Whatisanembeddedsystem?Whyisitsohardtodefine?

Anembeddedsystemisnearlyanycomputingsystemotherthanadesktopcomputer.Embeddedsystemsarehardtodefinebecausetheycoversuchaboardrangeofelectronicdevices.

1.2Listanddefinethethreemaincharacteristicsofembeddedsystemsthatdistinguishsuchsystemsfromothercomputingsystems.

1.

2.

3.singlefunctioned:executesaspecificprogramrepeatedlytightlyconstrained:thespecifiedcost,performance,andpowermustbemetreactiveandreal-time:systemmustquicklyandconstantlyreacttooutsidestimuli

1.3Whatisadesignmetric?

Adesignmetricisameasureofanimplementation’sfeaturessuchascost,size,performance,andpower.

1.4Listapairofdesignmetricsthatmaycompetewithoneanother,providinganintuitiveexplanationofthereasonbehindthecompetition.

(Note:answerswillvary)

Sizeandperformancecompetewithoneanother.Reducingthesizeofanimplementationmaycauseperformancetosufferandviceversa.

1.5Whatisa“marketwindow”andwhyisitsoimportantforproductstoreachthemarketearlyinthiswindow?

EmbeddedSystemDesign1

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