Uyini umbhalo we-PDF?

2023-11-06

Isingeniso se-PDF

I-PDF yifomethi yefayela ledokhumenti ephathekayo yokwethula nokushintshanisa ngokuthembekile, ngaphandle kwesoftware, i-hardware, noma uhlelo lokusebenza. Ngamanye amagama, amafayela we-PDF ajwayelekile kuzo zombili izinhlelo zokusebenza zeWindows ne-Apple.

Incazelo ye-PDF

I-PDF yifomethi yefayela eyenziwe yi-Adobe Systems yokushintshana ngefayela ngendlela ezimele ezinhlelweni zokusebenza, amasistimu okusebenza ne-hardware. Amafayela we-PDF asuselwa kumodeli yesithombe se-PostScript, engaqinisekisa umbala onembile nomphumela wokuphrinta onembile kunoma iyiphi iphrinta, I. E. I-PDF izokhiqiza ngokuthembeka yonke imilingiswa, umbala nesithombe sokuqala.

Inqubo yezentuthuko

Ifomethi yefayela le-PDF yathuthukiswa ekuqaleni kuka-1990 njengendlela yokwabelana engafaka amafomethi wefayela nezithombe ezakhelwe ngaphakathi, futhi kungaqhutshwa ngaphesheya kwamapulatifomu. Noma abamukeli kumapulatifomu wekhompyutha ahlukene ngokuphelele kungenzeka bangabi nazo izixhumi zesoftware zokusebenza ezifanele noma ezabiwe ukuzisebenzisa, I-PDF yayithandwa kakhulu phakathi kobuchwepheshe bokushicilela umsebenzi eminyakeni embalwa yokuqala lapho umbhalo we-World Wide Web kanye nombhalo we-HTML wawungakaveli.

Ekuqaleni, i-PDF yayithathwa kuphela njengefomethi yokubuka kuqala yekhasi, hhayi ifomethi yokukhiqiza. Kodwa-ke, imakethe ayizange izwe ngale ndlela, futhi ukulindelwa kwemakethe kuguqule ukugxila kwale fomethi, ngaleyo ndlela kushintsha nomkhiqizo. Izinto ezahlukahlukene zabafundi be-e-book zigcwala izimakethe zasekhaya nezakwamanye amazwe futhi zithathe indawo yezindaba yamaphepha emikhakheni eminingi.

Imiphumela eyinhloko

Amafayela we-PDF asebenzisa ama-algorithms wokucindezela ajwayelekile embonini, imvamisa amancane kunamafayela we-PostScript, okulula ukudlulisa nokugcina, lizimele ikhasi, ifayela le-PDF liqukethe "amakhasi" eyodwa noma ngaphezulu, ungaphatha ikhasi ngalinye ngokwehlukana, ikakhulukazi ilungele umsebenzi wezinhlelo zokusebenza eziningi, kungenxa yezinzuzo zamafayela we-PDF, Kancane kancane isiyintandokazi entsha embonini yokushicilela, inikeza abantu ukulula okukhulu.