Rub tam sim no thiab irrigation tam sim no yog qhov ntsuas ntsuas hluav taws xob tawm hluav taws xob muaj peev xwm (Nco tseg: rub thiab irrigation yog tag nrho rau cov zis kawg, yog li nws yog tus tsav tsheb muaj peev xwm) tsis. Cov nqe lus no feem ntau yog siv hauv digital circuits.
Ntawm no peb yuav tsum xub piav qhia tias qhov rub thiab dej tam sim no nyob rau hauv daim ntawv qhia nti yog tus nqi parameter, uas yog qhov txwv sab saud ntawm cov khoom siv hluav taws xob rub tawm thiab cov dej ntws tam sim no hauv qhov tseeb Circuit Court (tso cai siab tshaj qhov tseem ceeb).
Lub tswv yim yuav tsum tau hais hauv qab no yog tus nqi tiag tiag hauv Circuit Court.
Vim tias qhov tso zis ntawm digital circuits tsuas yog siab, qis (0, 1), tus nqi hluav taws xob:
Thaum cov zis siab siab yog cov zis, cov zis feem ntau yog muab rau cov khoom thauj. Tus nqi ntawm qhov tam sim no hu ua "rub tam sim no";
Thaum cov zis qis qis feem ntau yog tam sim no nqus cov load, tus nqi ntawm qhov nqus tam sim no hu ua "dej (sau) tam sim no".
Rau cov cuab yeej ntawm input tam sim no:
Cov khoom tam sim no thiab qhov nqus tam sim no yog input. Tam sim no yog passive, thiab lub nqus tam sim no yog active.
Yog hais tias sab nraud tam sim no dhau los ntawm tus pin nti, qhov 'ntws' nyob rau hauv lub nti yog hu ua irrigation tam sim no (ua irrigated);
Conversely, yog hais tias lub sab hauv tam sim no los ntawm lub nti pin los ntawm lub nti 'ntws' yog hu ua rub tam sim no (raug rub tawm);
Vim li cas kuv thiaj tuaj yeem ntsuas qhov tso zis tsav tsheb? Kev sib tshuam
Thaum lub logic qhov rooj tso zis tsawg, tam sim no uas yog irrigated rau hauv lub logic qhov rooj yog hu ua irrigation tam sim no. Qhov loj dua qhov dej ntws tam sim no, qhov siab dua qhov qis ntawm cov zis kawg. Nws tseem tuaj yeem pom los ntawm cov khoom tso tawm cov yam ntxwv nkhaus ntawm triode. Qhov loj dua qhov dej tam sim no, qhov loj dua qhov saturated voltage poob, thiab qhov loj dua qhov qis. Txawm li cas los xij, theem qis ntawm lub qhov rooj logic yog txwv, thiab nws muaj qhov siab tshaj UOLMAX. Thaum ua haujlwm ntawm lub qhov rooj logic, nws tsis pub dhau qhov nqi no. Cov lus qhia tshwj xeeb ntawm TTL logic qhov rooj qhia UOLMAX ≤0.4 ~ 0.5V. Yog li ntawd, muaj kev txwv siab tshaj ntawm cov dej tam sim no.
Thaum lub logic qhov rooj tso zis kawg siab, tam sim no ntawm lub logic qhov rooj tso zis kawg yog ntws tawm ntawm lub qhov rooj logic. Qhov tam sim no hu ua rub tam sim no. Qhov loj dua qhov rub tam sim no, qhov qis dua qhov siab ntawm cov zis kawg. Qhov no yog vim qhov tso zis-level triode muaj qhov tsis kam sab hauv, thiab qhov hluav taws xob poob ntawm qhov tsis kam sab hauv yuav txo qhov tso zis voltage. Qhov loj dua qhov rub tam sim no, qhov qis dua qhov siab ntawm cov zis kawg. Txawm li cas los xij, qhov siab ntawm lub qhov rooj logic yog txwv, thiab nws muaj qhov tsawg kawg nkaus UOHmin. Thaum ua haujlwm hauv lub qhov rooj logic, nws tsis pub tshaj qhov nqi no. Cov specifications ntawm TTL logic qhov rooj specifications uohmin ≥2.4V. Yog li ntawd, kuj tseem muaj qhov txwv siab tshaj ntawm rub tam sim no.
Nws tuaj yeem pom tau tias muaj qhov txwv siab tshaj ntawm qhov rub tam sim no thiab cov dej ntws tam sim no ntawm qhov tso zis kawg. Txwv tsis pub, thaum cov zis theem siab, lub rub tam sim no yuav txo qis cov zis ntau dua UOHMIN; Thaum cov zis qis qis, cov dej ntws tam sim no yuav ua rau cov zis siab dua UOLMAX.
Yog li ntawd, rub thiab irrigation tam sim no qhia txog qhov tso zis tsav muaj peev xwm. (Qhov loj dua lub nti rub thiab irrigation tam sim no parameter tus nqi, nws txhais tau hais tias lub nti yuav txuas ntxiv loads, vim hais tias, xws li irrigation tam sim no yog ib tug load, ntau load;
Vim hais tias qhov siab-theem input tam sim no me me, ntawm qib micro-level, nws feem ntau tsis tas yuav xav txog nws. Cov theem qis tam sim no loj thiab nyob rau ntawm milliamp theem.
Yog li ntawd, feem ntau tsis muaj teeb meem nrog qis-qib irrigation tam sim no. Siv tus kiv cua los piav qhia lub peev xwm ntawm lub qhov rooj logic kom tsav lub qhov rooj zoo sib xws. Cov kiv cua tawm ntawm txoj kev khuv leej yog qhov piv ntawm qhov qis-theem siab tshaj qhov tso zis tam sim no thiab qhov siab tshaj tawm tam sim no ntawm qib qis.
Hauv kev sib xyaw ua ke, kev nqus tam sim no, rub tawm tam sim no thiab tso dej tawm tam sim no yog lub tswv yim tseem ceeb heev.
Rub thiab xau, nquag tso zis tam sim no, yog los ntawm cov zis tso zis tam sim no;
Irrigation yog them, passive input tam sim no, uas ntws los ntawm qhov chaw nres nkoj tso zis;
Kev txom nyem yog nquag nqus tam sim no, uas ntws los ntawm qhov chaw nres nkoj input.
Lub tshuab nqus dej tam sim no thiab cov dej ntws tam sim no yog qhov tam sim no ntws mus rau hauv lub nti los ntawm sab nraud ntawm lub nti. Qhov sib txawv yog tias qhov nqus tam sim no ua haujlwm, thiab qhov nqus tam sim no ntws los ntawm cov nti tawm tswv yim kawg. Lub pouring tam sim no yog passive, thiab tam sim no ntws los ntawm qhov tso zis kawg yog hu ua tam sim no.
Lub rub tam sim no yog cov zis tam sim no muab los ntawm cov digital circuit tso zis siab rau qhov load. Cov zis theem qis thaum cov dej ntws tam sim no yog cov khoom siv tam sim no rau digital circuit. Lawv yog cov input thiab output tam sim no muaj peev xwm.
Kev nqus tam sim no yog rau lub davhlau ya nyob twg input (input kawg input), thiab rub tam sim no (tso zis kawg ntws tawm) thiab cov dej ntws tam sim no (qhov tso zis kawg yog irrigated) yog cov zis.
Lub sij hawm xa tuaj: Plaub Hlis-08-2023
