M'makompyuta a pa kompyuta, mawotchi amtundu amodzi amathandiza ma modems kuti agwirizane ndi PC kapena network router pogwiritsa ntchito chingwe chachikulu. Mawu akuti "serial" amasonyeza kuti deta yomwe imatumizidwa kumalo amodzi imayenda pa waya umodzi mkati mwa chingwe.
Miyezo ya Mitsinje Yogwiritsa Ntchito
Mkhalidwe wodalirika wa zochitika zamakono zamtundu wotumizirana zamtundu wakale wakhala RS-232 . Masewu ndi makina amenewa ndi ofanana ndi makina a PC ndi makina ena apakompyuta (onani mbali yotsatira). Mipangidwe yamakono ndi makina a PC-232 PC amakhala ndi zida 9-pin DE-9, ngakhale makina 25 DB-25 ndi zosiyana zina ziripo pa hardware yapadera. Njira yowonjezera RS-422 ikugwiritsidwa ntchito pa makompyuta ambiri a Macintosh.
Makhalidwe onse awiriwa akuchepa pang'onopang'ono chifukwa cha ma CD kapena mauthenga ofanana ndi USB kapena FireWire .
Zomwe zimadziwika kuti: COM port