Yeej, ib lub tshuab luam ntawv yog ntaus ntawv hom computer. Dot matrix printers luam tawm siv cov pas nrig tshwj xeeb nrog cov cim. Cov pins ntaus tawm daim kab xev thiab hloov cov duab mus rau daim ntawv.
Cov tshuab luam ntawv ua haujlwm txawv nyob ntawm tus qauv. Laser, piv txwv li, ua haujlwm ntawm lub hauv paus ntawm hluav taws xob zoo li qub thiab lub toner tshwj xeeb, uas yog qhuav qhuav zoo. Thaum lawv dhau los ntawm chav tsev toner, lawv tau tso cua sov los ntawm lub nqaj laser, tom qab ntawd tshwm ntawm cov nruas sab hauv lub tshuab luam ntawv. Toner sau cov ntawv sib foob thiab hloov cov duab ntawm cov cim rau hauv ntawv, uas tau luam tawm tag nrho. Lawv feem ntau siv cov kua dej nyob hauv tus mem kua. Inkjet printers muaj lub taub hau luam tawm uas thawj zaug luam duab ib daig ntawv thiab tom qab ntawd ua kom sov ua kua mem. Cov cim xav tau yog thawj zaug ntawm daim kab xev ntawm daim cartridge, thiab tom qab ntawv. Daim duab tsis tau luam tawm tam sim ntawd - lub tshuab luam ntawv tsim cov cim maj mam, thiab kev luam ntawv nrawm yog cuam tshuam los ntawm kev teeb tsa ntawm ib qho qauv. Thaum koj xav sau daim ntawv, koj tsuas yog nyem rau lub pob "Luam". Lub tshuab luam ntawv tawm vim tias lub koos pij tawj tau hloov cov ntaub ntawv no mus rau nws qhov kev nkag mus siv random - cov ntaub ntawv tsis. Koj tuaj yeem tsim kev ua tiav ib qho zuj zus lossis tshem tawm kev luam ntawv siv cov kev teeb tsa tsim nyog ntawm lub khoos phis tawm rau hauv lub tshuab luam ntawv. Tus kws tshaj lij yuav cuam tshuam nrog cov haujlwm uas tau txais ntawm nws tus kheej, tsuas yog saib txog qhov muaj nyob hauv ntawv. Yog tias lub tshuab luam ntawv tsis teb rau cov lus txib lossis luam tawm cov nplooj ntawv tsis muaj ntsiag to, tom qab ntawd qee hom kev ua haujlwm tsis raug. Nws yog qhov nyuaj rau txiav txim siab tias kev kho vajtse tsis ua haujlwm ntawm koj tus kheej, tab sis yog tias lub tshuab luam ntawv luam tawm cov ntawv dawb, ces nws yuav tawm ntawm tus cwj mem. Qhov no yooj yim rau kev nkag siab yog tias ua ntej koj pom tias qhov ci ntsa iab ntawm cov luam ntawv poob qis, los yog daim tawv ntoo tshwm ntawm daim ntawv, lossis yog tias luam ntawv tau dhau los ua tsis zoo. Yog tias cov ntawv ntim tsim tau yog "qub", lub tshuab luam ntawv yuav ua cov lus sib thooj, yog tias "sib txuam" - saib xyuas lub number case.
