C?c *. xlsx ho?c *. ??nh d?ng xls l? ??nh d?ng t?p ???c s? d?ng ?? l?u tr? b?ng t?nh v? n? ch? y?u ???c li?n k?t v?i Microsoft Excel, m?t ch??ng tr?nh b?ng t?nh ph? bi?n c? trong b? Microsoft Office. Xlsx l? ??nh d?ng m?c ??nh ???c s? d?ng cho trang t?nh Excel k? t? Excel 2007. Xls ???c s? d?ng cho Excel4.0/5.0/95/97. C?c t?p . ??nh d?ng xlsx c? t?nh n?ng D?a tr?n XML, ti?u chu?n m?, ??nh d?ng ? v? trang t?nh. Xls l? ??nh d?ng nh? ph?n v? h? tr? phi?n b?n c?. C?c t?nh n?ng b?o m?t ???c b?o v? b?ng m?t kh?u.
PDF, vi?t t?t c?a Portable Document Format, l? ??nh d?ng t?p ???c Adobe Systems t?o ra v?o ??u nh?ng n?m 1990. ??y l? ??nh d?ng t?p linh ho?t v? ???c s? d?ng r?ng r?i d?nh cho t?i li?u, ???c thi?t k? ?? tr?nh b?y v? trao ??i t?i li?u m?t c?ch ??ng tin c?y, b?t k? ph?n m?m, ph?n c?ng ho?c h? ?i?u h?nh ???c c? ng??i t?o v? ng??i nh?n s? d?ng. N? c? t?nh n?ng ??c l?p v?i n?n t?ng, ??nh d?ng nh?t qu?n, b?o m?t, c?c y?u t? t??ng t?c, n?n, ch? th?ch v? nh?n x?t, ch? k? s?, kh? n?ng truy c?p, kh? n?ng in, ??nh d?ng l?u tr?.
?ng d?ng web c? th? chuy?n ??i Office Excel 4.0,5.0/95/97/2007/Vorlage/Template/Open XML' S xls/xlsx/xlc/xlc/xlm/xlw/xlk ??nh d?ng ?? pdf tr?c tuy?n.
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