北京航空航天出版社
CHAPTER1:Introduction
1.1Whatisanembeddedsystem?Whyisitsohardtodefine?
Anembeddedsystemisnearlyanycomputingsystemotherthanadesktopcomputer.Embeddedsystemsarehardtodefinebecausetheycoversuchaboardrangeofelectronicdevices.
1.2Listanddefinethethreemaincharacteristicsofembeddedsystemsthatdistinguishsuchsystemsfromothercomputingsystems.
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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