Daim duab thaiv ib daim duab (block diagram) yog ib txoj kev los qhia txog cov kev daws teeb meem rau hauv daim ntawv ntawm cov duab pom. Ib daim foos tshwj xeeb yog siv los visually piav qhia qee cov kauj ruam rau cov hlwb ntawm cov flowchart. Tsis yog txhua lub algorithm tuaj yeem piav qhia nrog ib qho flowchart, tab sis hom no haum rau ntau yam haujlwm.
Lub koom haum ntawm cov ndlwg
Daim duab qauv ntawm cov txheej txheem algorithm uas xav tau txhawm rau saib kom ua ntu zus ntawm cov nqis tes ua thiab kev coj los npog tag nrho. Nws paub tias tib neeg lub hlwb zoo dua ntawm kev daws teeb meem yog tias nws nthuav tawm cov xwm txheej nyuaj, thiab daim duab thaiv yog qhov zoo tshaj plaws los piav qhia cov algorithms rau cov kev pab cuam li no.
Txhua qhov thaiv ntawm daim duab thaiv tau sib cuam tshuam los ntawm txoj kab, lub ntsiab lus sib txuas ntawm lawv.
Txoj kev kawm txog flowcharts yog ib feem ntawm kev kawm lub khoos phis tawj science hauv tsev kawm theem siab. Cov lus qhia ntawm cov txheej txheem no tuaj yeem pom hauv phau ntawv kawm. Txij li thaum siv cov flowcharts ua rau kev sau ntawv yooj yim, yuav luag txhua lub blog uas qhia cov nyeem los sau cov code tseem tham txog hom no.
Cov ntsiab lus ntawm daim duab thaiv
Cov ntsiab lus ntawm cov ntsuas hluav taws xob yog cov duab geometric, sab hauv uas koj sau code lossis cov lus piav qhia ntawm kev nqis tes ua. Cov txheej txheem ib txwm pib nrog elongated oval. Nws txhais tau hais tias qhov pib lossis xaus ntawm qhov haujlwm, nrog rau qhov pib lossis thaum kawg ntawm kev ua haujlwm (hu thiab rov qab). Hauv qhov kev paub ntau, nws tuaj yeem hais tias qhov no yog qhov pib thiab xaus ntawm qhov teeb meem.
Daim duab plaub yog siv los sau cov haujlwm, kev ua lej lossis kev ua haujlwm. Nov yog qhov haujlwm txwv.
Qhov rhombus yog lub cav muaj kuab uas muaj qhov mob. Nws txhais tau tias kuaj rau tus mob, ces kis tau tshwm sim. Cov lus qhia hauv ceg yuav yog ob qho (qhov "yog tias, tom qab ntawd" kev tsim kho), lossis ob peb (feem ntau hauv cov lus programming xws li kev tsim kho tau piav qhia los ntawm lo lus "rooj plaub")
Lub duab plaub nrog cov ncej ntawm ob sab yog qhov txheej txheem thaiv txheej txheem. Nws qhia txog kev hu mus rau subroutine thiab teev cov npe hloov uas tau dhau lawm. Piv txwv li, qhov no yog li cas ib tug muaj nuj nqi hu yog denoted.
Parallelogram yog cov ntaub ntawv nkag / tso tawm thaiv. Nws teev cov ntaub ntawv xa mus rau cov khoom tsim tawm lossis tau txais los ntawm cov khoom siv nkag.
Ib tug tav toj elongated hexagon. Daim duab no sawv cev ib qho voj voog. Sab hauv, thawj pib tus nqi ntawm lub voj hloov, nws cov kauj ruam thiab tawm qhov mob yog sau. Qhov block no tuaj yeem muab faib ua ob txoj kev ib nrab, tom qab ntawd pib lub voj voog sau thawj zaug, thiab xaus rau qhov thib ob, thiab txhua qhov haujlwm yog muab tso rau hauv nruab nrab.
Cov yam ntxwv ntawm kev siv cov khoom txiav thaiv
UML daim duab piav qhia raug siv los piav qhia txog kev thov sau ntawv hauv cov kwv mus kom ze ua haujlwm.
Cov duab kos ua ke (block diagrams) tsuas siv tau rau cov lus programming uas ua raws cov qauv txheej txheem. Rau cov lus dag, piv txwv li, rau cov lus nyob hauv qib qis, txoj kev piav qhia qhov kev daws teeb meem no yuav tsis ua haujlwm. Zoo li no, yog tias koj sau ua hom lus tsis pub dhau lub moj khaum ntawm qhov kev kawm ua kom muaj kev sib txuam ua ke, ces qhov cuam tshuam ntawm cov khoom tsis tuaj yeem raug piav qhia siv cov flowchart. Rau cov xwm txheej zoo li no, lwm txoj hauv kev pom kev siv lub algorithm tau siv.
