英语计算机.pdf

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1、Managing processes Scheduler maintains list of processes adds,deletes.process table process id,priority,memory area,ready orwaitingGrading CriteriaPreparation(being prepared for class)Classroom BehaviorAssignments,homework and/or projectMidtermFinal examTotal:20%20%10%25%25%100%P re p a ra tio n mea

2、ns-EVERY W K K,A fR M tf CLASS:1.reading and attempting to understand all assigned reading2.working all assigned exerdses3.preparing questions about the reading and/or exerdses4.being able to intelligently discuss the reading and exerdses5.doing all other assignments as required100%TextbookProfessio

3、nal Englishin Use-ICT 剑 桥 信 息 与 通 信 技 术 英 语(3)times being late counts as missing on class.b.missing 15 omissing tht tntlrt perthe textbook is mostlyconcepts and terminologyprimarily used in first half of the semestermost of the internet and application usagetonics are NOTin the textbookGrading Crite

4、riaPreparation(being prepared for class)Classroom BehaviorAssignments,homework and/or projectMidtermFinal examTotal:_ _ _Before Next Week Get the textbook Read Introduction(p,8-9),Units:0(p.10-11),33-36(p.76-83),Units:1-3(p.12-17)work the exercises in each unit prepare questions that you have aboutt

5、he reading or exercisesThis class time is for this class workPay attention,take notes,do the exercisesseriouslyClass time is NOT the time for you to:Email,MSN or QQ your friends Play Internet games Use the computers or Internet for activities notrelated to the class-including during breaks!Anyone fo

6、und doing any o f these activitiesduring class or dunng breaks will lose 5points,each tim e,on their final grade Anyone found doing these things3 tim es will fail the classCreate a list of the different types ofwebsites you can find on the Internet college info,shopping,newspaper,etc.list as many ty

7、pes as possible withEnglish language examplesVisit the Research Guide for Studentswebsite and write a short review http 二 www.aresearchguiifeCQm See syllabus for detailsI W I I I I Q l I V I IV IV O L V V I I I I C 7 I I I I U I I I C W U I Microsoft Word Clean,white A4 Paper 1 inch(2.54 cm)margins

8、all around upper right hand comer student number and English name.1 2 point,Times New Roman font.Double space paragraphs.indent first line of each paragraph Page numbers in lower right cornerUsing Bytes for Numbers Xumliers c.m Ixr uiHigiwd(all p citive number*，or sigiied(one bit used to mean or nig

9、iied:2s=25()bit patterns represent 0.255 Signed:2s bit patterns represent-128.+127 Left-most bit sigii bit i 1!1 JI*E Im m|。方 正 象:4 1s A1 c i WMtti jT a 0TT%?ww iv”1#U0；4*j.V。4 B U H.:.E t t j m nw!f MBttW.t t m t 1,t11tThousands,Millions,Billions,etc.SUKC l uuio n|(p thouM nd kio-Kk1R 心 pro-p(liund

10、srd brelo hl(rl?iemto-f(0i n drea-IO4*atto-*Tile(2PC(Prtcessing Unm is rhe br,iot the computer.2enrr.il Fetches uistruchon from num mrmorv.*Exuiuiies tlirtn,and tlwn execute*tliem one afteranother.The components are connected by a bus”,wliis a collection of parallel wires for tcmsmirruigaddress,data

11、,and control signals.Busses can be external to the CPU.connectingmetnon-uid I/O devices,bur also uitem；il to tI、coinp Hcd(i xrvcr.d dion Add data at.uldres 2%to data At Jdrr 3 6.then store the result ataddress 2tX MOVM296.A MOVM 30 1 B ADDV A,B MOVRA.296A00 0 2 s 0 18 99 580 00 2B 72 6 60 7 42 0 0 1

12、3 0 6 322B3 2 i 71 322 2t 0 0 0 32 87S 2t 533 32 26.工 87 6 61 32M C 101 w 101 M20M3 I0I 34X:0产 0w0 0 0A Simple ProgramX=X+YAdd data at address 296to data at address 305,then store the result ataddress 296MOVM 296,AMOVM 305,BA D D U.V BM O R A,296A Simple Programi X=X*YI Add daiA at address 296to dat

13、a at address 305.then store the result ataddress 296 MOVM 296,A M OVM 305,B A D D L A B M O K A,296o 0 0 2 5 0 44 M 58 0o o 0 0 0 2St 60 27272 t 0Q i 0 32 87 63o o o 32MM 2 j M 3,小 o o o2tM 0 0 13 0/8 乎 99 3 32 24AB4426 C P I with 233 GHz gigihcrrz)dock 2 k k tic k s V，h m rut KKO MIPSabout i billio

14、n uitnctions per secondjibout instructions per secondAbstract view ot computer systecomponentsOS components/services Process management Main-memory management File management I/O system management Secondary storage management.Networking Protection system Command-interpreter systemExamples Windows iO

15、S Unix Android Linux Symbian AIX Windows Mobile HPUX BlackBerry Mac OS WebOS(Palm/HP DOS OS/2EvolutionSingle job Submit job+data to operator Batch processing Non-interactive Load job into job queue.First-in,first-out(RFO)line.job control language(JCL)Interactivity.Terminals Real-time processingEvolu

16、tionMultiple processes Time-sharing Originally,multiple users,each with a singleprocess Multitasking Single or multi-user with multiple processesComponents of an OS Shell Part of OS with which a usercommunicates Graphical User Interface(GUI)Command line Can have more than one Kernel Part th a t runs

17、 at all tim es System programs Configuration utilities,etc.OS components/services What is an OS and what does it do?Process management.Creating,deleting,starting,stopping,andsynchronizing processes Main-memory managementflw h a t memory is free;who is using whatm em ory File management Creating and

18、deleting files and directonesOS components/services I/O system management I/O(input/output)Device driver interfice enable OS to talk to controllefi What is controlltf?Secondary storage management Disk KhtduHng,fre-ipw nd storageGetting the OS runningIf the OS allows all other programs tobe executed,how does the OS getstarted?Boot strapping(booting)The computer has to figure out on.ts ownhow to get started.The booting processMam memoryROMRAMSecondarystorage