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《计算机英语》计算机英语第三章.pptx
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《计算机英语》计算机英语第三章.pptx
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计算机英语
Chapter 3
Computer Software
1
1
System Software
2
Application Software
目录
CONTENT
3
Different Forms of
Software
4
Software Development
Life Cycle
2
Application
andsoftwaredesignispreparedfrom
andinstallthat
thephysicalinterconnectionsanddevicesrequiredto
notfailafter
categories:
[dɪ'lɪvərəbl]
Reliable—acceptablelevelofbreakdownsorfailure:
Spreadsheetsoftwareallowsuserstocalculatenumbersarranged
dividedinto
calculations.
software,educationaland
customerrealizes
andcolumns,which
Meetingswithmanagers,stakeholdersandusersareheld
Lead in
Computersoftware,also called acomputerprogram orsimply a
program,isaseriesofinstructionsthattellthehardwareofacomputer
whatto
encompassesthephysicalinterconnectionsanddevicesrequiredtostore
andrunthesoftware.[1]
do.It is so called in contrastto computerhardware,which
Thesoftware system can bedivided into twobroad categories:
system
executing
from
hardwarewhichultimatelyreceivestheinstructionasmachinecode.[2]
software and application software. Computers operate by
thecomputerprogram,which involvespassing instructions
theapplication software,through thesystem software,to the
3
1
System Software
4
1
System Software
System software,whichconsistsofprogramsthatcontrolthe
operationofthecomputeranditsdevices,servesastheinterface
between
supportsoperationsofcomputersystemsandnetworks.
a userand thecomputer'shardware. It managesand
Common
system software includesoperating system
(OS),
languagetranslators,andutilityprograms,withtheOSasthecore.
Theoperatingsystem isin chargeofmanaginghardwareand
softwareresources,organizingworkprocess,andprovidingusers
with
mostbasic
cannotrunonthecomputer.MicrosoftWindowsandLinuxare
examplesofoperatingsystems.
positivework
system
environmentsandfriendly interfaces.Itis the
software,withoutwhich anyothersoftware
5
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