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Htnct,n itn ouytn havtn an mroctyyingn unitn calltdn  tntraln Proctyyingn Unitn ( PU).n Forn mroctyyingn ourn inytructony,n thtn
        coomuttrnouytnbtnabltntonytortndatan(yuchnaynoarkynofnytudtntyninnanclayy)nandninytructony.n o,nancoomuttrnouytnhavtn
        anotoorSnunit.n
        Tonyuooariyt,nancoomuttrniynanntltctronicndtvictnthatnacctmtyninmutndatanfroonthtnuytr,nmroctyytynit,nandnmroductyn
        rtyulty.nItncoomriytynthtnfollowingncoomontnty:nn(mltaytnyttnFign1.1):
        ● InmutnUnit
        ●  tntralnProctyyingnUnitn( PU)

        ● MtoorSnUnit
        ● OutmutnUnit


                                                   Central Processing Unit

                                                         ontrolnUnit

                                   Inmutn           Arithottc/LogicnUnit         Outmutn
                                  Dtvict                                         Dtvict



                                                       MtoorSnUnit


                               Fign1.1:n oomontntynofnancoomuttrnySytton(VonnNtuoannnArchittcturt)
        Thtninmutnunit,n tntralnProctyyingnUnitn( PU),notoorSnunit,nandnoutmutnunitnconyttuttnthtnhardwartnofnancoomuttr.n
        Anytqutnctnofninytructonyngivtnntonancoomuttrniyncalltdnanmrograo.nAncoomuttrnoanufacturtrnmrovidtynytvtraln
        uytfulnmrograoynthatnhtlmnthtntndnuytrntonuytnthtncoomuttrnconvtnitntlS.nAnyttnofnmrograoynthatnmtrforoynanuytfuln
        taykniyncalltdnyoftwart.nnInncontraytntonthtncoomuttrnhardwart,nthtnyoftwartniynnotnviyibltntonthtnhuoanntSt.nAn
        coomuttr,nhavingnytvtralninmut-outmutndtvicty,niynalyoncalltdnancoomuttrnySytto.nFign1.2nmrtytntynthtnIPOncScltn
        ("Inmutn>nProctyyn>nOutmut"ncSclt),nwhichnrtmrtytntynthtnytqutntalnytagtynthroughnwhichndatanornactonynflowninn
        anySyttonwhtrtninitalndatan(inmut)niyntranyforotdn(mroctyy)ntonmroductnanrtyultn(outmut),nwhichncannthtnninflutnctn
        yubytqutntnactonyn(inmut).



               Electronic Numerical Integrator and Computer (ENIAC) was the first electronic programmable computer.







                                                         INPUT









                                            OUTPUT                 PROCESS




                                                     Fign1.2:nIPOn Scltn



           2   Touchpad Informatics Practices-XI
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