Kev tswj qhov system

Access controller yog ib qho tshiab niaj hnub kev tswj hwm kev ruaj ntseg, nws koom nrog microcomputer tsis siv neeg txheeb xyuas thev naus laus zis thiab kev tswj hwm kev ruaj ntseg niaj hnub ua ib qho, nws suav nrog hluav taws xob, tshuab, kho qhov muag, khoos phis tawj thev naus laus zis, kev sib txuas lus thev naus laus zis, biotechnology thiab ntau lwm yam tshiab technologies.
Nws yog lub luag haujlwm tseem ceeb los daws qhov kev nkag mus kom ua tiav kev tswj hwm kev nyab xeeb ntawm kev ntsuas kom zoo, muaj feem xyuam rau ntau lub tuam tsev tsis pub lwm tus paub, xws li cov tsev txhab nyiaj, tsev so, chav siv computer, cov tsev qiv ntawv foob pob hluav taws, chav tsis pub lwm tus paub, chav ua haujlwm, lub zej zog ntse, factories thiab lwm yam.