简介:摘要针对NXP系列单片机,在生产过程中需要添加产品序列号的问题,对LPC1788单片机在ISP模式下烧录过程进行了分析,并通过编写上位机软件,实现了在烧写过程中添加产品序列号的功能,本文详细介绍了LPC1788单片机程序烧录过程,以及数据采集过程。
简介:论文摘要ISP(InSystemProgrammability)在系统可编程技术对于实现智能仪器仪表系统基于TCP/IP协议的Internet接入具有重要的意义。所谓“在系统可编程”是指对器件、电路甚至整个系统进行现场升级和功能重构的能力。这种重构可以在实验开发过程中,制造过程中甚至是在交付用户使用之后在现场或通过Internet进行。本文讨论了ISP(InSystemProgrammabiljty)技术在智能仪器仪表设计中的应用。
简介:Apeer-to-peer(P2P)networkisadistributedapplicationarchitecturewhichprovidesmanyattractivefeatures,suchasavailability,self-organization,load-balancing,andanonymity.However,P2Pnetworkhascreatedsignificantproblemstonetworkoperatorsbygeneratinglargevolumesofinterautonomoussystem(inter-AS)traffic.FocusingontheBitTorrentswarmingprotocol,thispaperproposesanapproachwhichaimstoreduceP2Pgeneratedinter-AStraffic.Inparticular,theapproachcanreduceinter-AStrafficby50%to70%.Moreover,itcanimprovethedownloadingspeedby60%forthepopulartorrents.Theevaluationshowsthatcontrolledregional-basedcontentsreplicationcaneffectivelyachievethisgoal.Furthermore,theapproachisincrementallydeployable.NetworkregionsinwhichthesystemgetsdeployedcansolvetheirP2Pgeneratedinter-AStrafficproblemsautonomously,i.e.,withoutanyInternetserviceproviders-collaborationandanyrequirement,thesystemcanbedeployedintheentireInternet.