Chii chinonzi scanner

Vazhinji kombiyuta peripheral mano pari kushandiswa mumba, kusvikira ichangopfuura aigona kuwanikwa chete mumahofisi makambani makuru. Izvi ndizvo chaizvo zvakaitika kuna kombiyuta scanner. Producers akakurumidza kuona kuti niche pamusika uyu vakasununguka, uye takakwanisa kutanga kugadzirwa ari budgetary mudziyo kirasi, iyo inoshanda zvakazara kugutsa zvinodiwa avhareji musha user.

Pasinei chokwadi kuti zvakachengetwa muzvigadzirwa kombiyuta chipiriso siyana mano izvi, kazhinji panguva muenzi, mubvunzo unomuka, chii scanner. Izvi zvakajairika, nekuti kutsvaka ruzivo zvoga. Nhasi tiri kutarisa chii chiri scanner uye chii kutsvaka kana kutenga.

Scanner - ichi mudziyo opto-zvemaziso kuti rokutendeutsa mufananidzo ruzivo kupinda digitaalinen chimiro, izvo zvinogona kushandisa purogiramu yekombiyuta. Heino imwe tsananguro nyore. Zvisinei, kuti zvakazara kunzwisisa scanner, unofanira kudzidza kwayo zvemukati marongerwo. Izvi zvichawedzera kwete chete zivo nechigadziko, asi inokupai iwe kusarudza muenzaniso yakanakisisa masutu.

Total scanner uchishandisa musimboti uri nyore kwazvo; tarisa chinhu kutungamirira chiedza mwaranzi uye zvishoma kufunga svetoregistriruyuschie okunze. Nokuda akasiyana siyana kufungisisa (semuenzaniso, dema ruvara kunoratidza kupfuura chena) pfungwa chikwata zvinowanisa munhu "anodhinda" digitaalinen pamusoro tarisa chinhu. kunyatsotsanangura Izvi zvinoita zvakawanda broadly kupindura mubvunzo chii chiri scanner, nokuti kushanda pakuvheneka, zvinoitika, unogona kunyange kura zvinhu, kwete murugwaro papepa, sezvo vazhinji vanotenda. Asi, zvakadaro, zvinonzwisisika kwakapararira zvikuru kushandiswa mudziyo chakagadzirirwa kushanda rwezuva uye Graphics. Pasinei zvakafanana nheyo kushanda, kunongova akasiyana scanners.

Most yakaderera-kuguma mienzaniso vari piritsi namano. Mavari papepa zvemapuranga ine graphical ruzivo anoiswa pamusoro läpinäkyvä hwindo (rinoonekera, mapurasitiki) uye mudziyo wacho waitsimbirira pamusoro opaque butiro. Next kuti jira anotungamirirwa chiedza danda uye akaratidza akabatwa. The chikuru chinhu pamusoro scanner - chizvaro. Pane akasiyana vaviri nayo: Kishi uye CCD. Kana chizvaro rokutanga mhando pasi girazi, iyo anoiswa pamusoro jira, nenhumbi chinhu multi-mukoto LEDs uye photocells. Iye zvishoma nezvishoma chinokambaira jira, kusanganisira LEDs kutendeukira tsvuku mutsetse, zvitema, mavara matema (zvakakodzera kuti paumbwe imwe ruvara mufananidzo).

mhando kwakadaro yakaderera mutengo uye rakavimbika mukuru (hapana yemasikati) anogona saka mari kufarira vatengi kutsvaka mhinduro kushanda pakuvheneka pamwe chena chinyorwa mapeji. Saka tinorangarira kuti kushanda pakuvheneka kumhanya anononoka, zvinoda zvakasimba clamping kuti jira kuti girazi, kuti mediocre unhu mifananidzo.

In yokutevedzera vane CCD chizvaro diodes havasi pamusoro wenhumbi, uye jekeso rambi. The nechiedza inounganidzwa nokuda kwegadziriro uchirapwa nezvionioni, kuti vawane ruvara mufananidzo rakakamurwa zvinoumba pakati chakarondedzera akabatwa uye photocells. mhinduro iyi akabvumira kuti yakajeka uye yakajeka mifananidzo panguva goho, apo zvakasimba ndakabata magirazi usiri mutemo, sezvo chiedza kusimba zvakakwana kuti kukunda pfupi kure. Processing havukavu rave kwakawedzera substantially. Tinogona kutaura kuti nhasi chiri nenzvimbo mhinduro. Zvakaipira ndiwo mutemo pamusoro rambi upenyu (nenguva zvichaita kuchinja, sezvo kusiyana chiedza-emitting diodes) uye kudikanwa ane kwokunze simba zvitengeswa.

Scanners dzinoratidzwa udzamu gamut (zvakafanana 24, 32, 48 matomu) uye kwemupfungwa. On the ruvara nematomhu usaba chete chekubuda zvifananidzo, asiwo mheremhere chizvaro pachayo, saka zvakanyanya kunaka. Ukuwo, hatifaniri kuva imba pakudzinga remwa - a aidhinda kuti outputs ari Scan mufananidzo haisi kukwanisa kuratidza 48-wedzeredzei. Resolution raanotaura sezvo XXX: YYY, apo «XXX» - the Dots, uye «YYY» - nenhumbi matanho.