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Dab tsi yog qhov txawv ntawm serial ports thiab parallel ports?
Niaj hnub no peb tab tom tham txog qhov sib txawv ntawm qhov chaw nres nkoj serial thiab qhov chaw sib txuas. Ob qhov chaw nres nkoj serial thiab qhov chaw sib txuas yog cov khoos phis tawj sib txuas, uas yog siv los txuas cov khoom siv thiab khoos phis tawj, tab sis muaj qhov sib txawv loj ntawm lawv.
Cov Lus Qhia
- 1. Dab tsi yog qhov chaw nres nkoj sib txuas?
- 2. Dab tsi yog qhov chaw nres nkoj serial?
- 3. Qhov txawv ntawm ob yog dab tsi?
- 4. Cov lus xaus
1. Dab tsi yog qhov chaw nres nkoj sib txuas?
Parallel chaw nres nkoj yog lub ntsiab lus ntawm parallel interface. Qhov chaw nres nkoj sib txuas ntawm cov khoos phis tawj siv tshuab siv 25-pin D-shaped connector. Lub npe hu ua "parallel" txhais tau hais tias 8 khoom ntawm cov ntaub ntawv raug xa mus ib txhij los ntawm cov kab sib txuas, kom cov ntaub ntawv xa mus ceev tau zoo heev, tab sis txoj kab ntev ntawm kev sib kis tau raug txwv. Vim tias qhov ntev nce, qhov cuam tshuam yuav nce ntxiv, thiab cov ntaub ntawv yuav ua rau yuam kev. Tam sim no, qhov sib txuas sib txuas yog siv los ua lub tshuab luam ntawv chaw nres nkoj, thiab lwm yam.
2. Dab tsi yog qhov chaw nres nkoj serial?
Ib qhov chaw nres nkoj tseem hu ua serial kev sib txuas lus interface, lossis COM chaw nres nkoj. Raws li cov qauv hluav taws xob thiab cov kev cai, cov chaw nres nkoj muaj xws li RS-232-C, RS-422, RS485, USB, thiab lwm yam.
3. Qhov txawv ntawm ob yog dab tsi?
1. Serial ports thiab parallel ports siv sib txawv txoj kev xa cov ntaub ntawv. Qhov chaw nres nkoj serial yog me ntsis-los-ntsis kis tau tus mob interface uas xa cov ntaub ntawv mus rau lub computer lossis lwm yam khoom siv me ntsis. Txoj kev no tuaj yeem ua kom muaj kev ntseeg siab ntawm cov ntaub ntawv kis tau tus mob, tab sis qhov kev sib kis tau qeeb. Qhov chaw nres nkoj sib txuas yog qhov sib txuas sib txuas sib txuas uas tuaj yeem xa ntau cov ntaub ntawv nyob rau tib lub sijhawm, yog li qhov kev sib kis ceev nrawm dua, tab sis nws yooj yim cuam tshuam los ntawm kev cuam tshuam.
2. Serial ports thiab parallel ports kuj sib txawv hauv cov khoom siv thiab cov xwm txheej siv. Serial ports feem ntau yog siv los txuas qee cov khoom siv qis qis, xws li tshuab luam ntawv, modems, thiab lwm yam. Lawv cov ntaub ntawv xa mus ceev tsis siab, tab sis kev ntseeg siab ntawm cov ntaub ntawv xa mus yuav tsum siab. Parallel ports feem ntau yog siv los txuas cov khoom siv ceev ceev, xws li hard drives, optical drives, thiab lwm yam, uas yuav tsum muaj kev sib kis ceev dua thiab cov ntaub ntawv xa mus ntau, tab sis muaj cov kev xav tau qis dua rau kev ntseeg siab ntawm cov ntaub ntawv xa mus.
3. Cov lub cev interfaces ntawm serial ports thiab parallel ports kuj txawv. Serial ports feem ntau siv DB9 lossis DB25 interfaces, thaum cov chaw nres nkoj sib txuas siv DB25 interfaces lossis cov chaw nres nkoj sib txuas. Tsis tas li ntawd, cov chaw nres nkoj tseem tuaj yeem siv USB interfaces rau kev xa cov ntaub ntawv.
4. Cov lus xaus
Muaj qhov sib txawv loj ntawm cov chaw nres nkoj serial thiab cov chaw nres nkoj sib txuas ntawm cov ntaub ntawv xa mus, cov xwm txheej siv, thiab lub cev cuam tshuam. Yog li ntawd, thaum xaiv ib qho interface, koj yuav tsum xaiv qhov tsim nyog interface raws li kev thov tshwj xeeb.
Tej zaum koj yuav txaus siab rau SINSMART cov khoom nrov:
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