Cov txheej txheem:
- Thaum twg cov ntaub ntawv luam theej tau tshwm sim?
- Ntev npaum li cas cov scanner nyob ib puag ncig?
- Lub khw muag khoom noj thaum twg pib siv lub tshuab luam ntawv?
- Lub khw muag khoom noj dab tsi siv ua ntej barcodes?
Video: Thaum twg lub tshuab luam ntawv tau nrov?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Belin pib ua haujlwm ntawm thev naus laus zis nyob rau xyoo 1905. Cov tshuab luam ntawv niaj hnub tau nkag mus rau hauv kev lag luam hauv xyoo 1980's, txawm tias kev daws teeb meem (ntsuas hauv dots ib nti, lossis DPI) tseem qis kom txog thaum lig Xyoo 1990. Qhov no txhais tau tias "qhov koj pom yog qhov koj tau txais" scanning tsis tau, vim cov scanners poob ntau cov duab hauv kev ua haujlwm.
Thaum twg cov ntaub ntawv luam theej tau tshwm sim?
Raws li peb tau tham, cov no yog cov neeg paub peb niaj hnub no thiab tau txais kev nyiam nyob rau hauv thaum '90s. Flatbeds optically luam theej duab cov ntaub ntawv los yog cov duab thiab hloov lawv mus rau hauv daim ntawv muaj txiaj ntsig zoo rau kev lag luam thoob plaws ntiaj teb.
Ntev npaum li cas cov scanner nyob ib puag ncig?
Thawj daim duab scanner tsim los siv nrog lub computer yog lub nruas scanner. Nws tau tsim hauv 1957 ntawm US National Bureau of Standards los ntawm ib pab neeg coj los ntawm Russell A. Kirsch. Thawj daim duab puas tau luam tawm ntawm lub tshuab no yog daim duab 5 cm square ntawm Kirsch tus tub uas muaj peb hlis, Walden.
Lub khw muag khoom noj thaum twg pib siv lub tshuab luam ntawv?
Ntawm 26 Lub Rau Hli 1974, thawj qhov kev teeb tsa ntawm lub khw muag khoom lag luam nkag mus rau kev pabcuam hauv Marsh lub tsev loj hauv Troy, Ohio. Qhov no Spectra Physics qauv Tus nqi scanner, yog ib qho ntawm thawj kaum tus scanners.
Lub khw muag khoom noj dab tsi siv ua ntej barcodes?
Nyob rau xyoo 1966, National Association of Food Chains (NAFC) tso tawm ib qho kev hu xov tooj rau cov khoom lag luam uas xav tau ntau qhov kev taug qab. Nyob ib ncig ntawm lub sijhawm no, kev lag luam kev tsheb ciav hlau tau txais kev pom zoo kho qhov muag bar code tom qab xyoo ntawm kev sim los tsim cov txheej txheem kev txheeb xyuas qhov tseeb.
Pom zoo:
Lub tshuab luam ntawv twg yog raws li lub nplhaib ntiv nplhaib?
CT scanners siv lub nplhaib ntiv nplhaib, uas tau qhia hauv xyoo 1989. Slip-ring scanners tuaj yeem ua helical CT scanning, uas lub raj x-ray thiab lub ntsuas ntsuas tig ib ncig. Tus neeg mob lub cev, tsis tu ncua txais cov ntaub ntawv thaum tus neeg mob txav mus los ntawm gantry .
Puas txhua lub tshuab luam ntawv luam tawm ob sab?
Cov tshuab luam ntawv feem ntau muaj kev xaiv ntawm kev luam ntawv ntawm ob sab ntawm daim ntawv (tsis siv neeg luam ntawv duplex). Lwm lub tshuab luam ntawv muab cov lus qhia kom koj tuaj yeem muab cov nplooj ntawv rov qab los luam tawm sab thib ob (siv phau ntawv duplex luam ntawv) .
Puas yog lub tshuab hloov pauv phem ua suab nrov nrov?
Nws yuav tsum muaj lub zog zoo txhawm rau txhawm rau lub tsheb lub cev muaj zog, thiab yog tias lub roj teeb tsis rov ntxiv nws lub zog kom zoo vim yog lub tshuab hloov pauv tsis raug, nws yuav dhau los ua haujlwm tsis zoo. Koj yuav hnov ib lub suab nrov thaum sim pib lub tsheb, thiab lub cav yuav nyuaj rau tig .
Thaum twg lub tshuab luam ntawv tawm tuaj?
Goldsmith thiab inventor Johannes Gutenberg yog ib tug nom tswv exile los ntawm Mainz, lub teb chaws Yelemees thaum nws pib sim nrog luam ntawv nyob rau hauv Strasbourg, Fabkis nyob rau hauv 1440. Nws rov qab mus rau Mainz ob peb xyoos tom qab thiab los ntawm 1450, muaj lub tshuab luam ntawv zoo meej thiab npaj siv ua lag luam:
Koj puas tuaj yeem luam nyiaj ntawm lub tshuab luam ntawv?
Koj lub cev tsis tuaj yeem luam theej lossis Photoshop nyiaj ua tsaug rau 'kev zais tsis txaus ntseeg thiab ua haujlwm tau zoo' kev ruaj ntseg. Koj yuav tsum tsis txhob sim luam nyiaj. … Vim tias kev cuav cuav yog qhov txhaum cai heev, lub tshuab luam ntawv yuav tsis kam luam daim nqi, thiab Photoshop yuav tsis lees txais daim duab .
