{"id":3833,"date":"2026-08-18T09:16:38","date_gmt":"2026-08-18T02:16:38","guid":{"rendered":"https:\/\/cauchuyendoisong.vn\/?p=3833"},"modified":"2026-08-18T09:16:38","modified_gmt":"2026-08-18T02:16:38","slug":"tai-sao-nhieu-nguoi-goi-1-nghin-la-1k-ly-do-thuc-su-khong-phai-ai-cung-biet-2","status":"publish","type":"post","link":"https:\/\/cauchuyendoisong.vn\/?p=3833","title":{"rendered":"T\u1ea1i sao nhi\u1ec1u ng\u01b0\u1eddi g\u1ecdi 1 ngh\u00ecn l\u00e0 1k: L\u00fd do th\u1ef1c s\u1ef1 kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft"},"content":{"rendered":"<p>V\u1edbi nhi\u1ec1u ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u1ebf h\u1ec7 tr\u1ebb th\u01b0\u1eddng d\u00f9ng ch\u1eef \u201dk\u201d thay cho k\u00fd hi\u1ec7u ti\u1ec1n. V\u00ed d\u1ee5 nh\u01b0 200k = 200.000 VND, 20k = 20.000 VND\u2026 Tuy nhi\u00ean kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u t\u1ea1i sao \u201c1k\u201d l\u1ea1i b\u1eb1ng 1000?<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/media.phunutoday.vn\/files\/content\/2023\/09\/08\/18-1910.jpg\" alt=\"18\" width=\"900\" height=\"506\" \/><\/figure>\n<p>Th\u1ef1c t\u1ebf, ch\u1eef \u201cK\u201d \u0111\u1ee9ng sau m\u1ed9t s\u1ed1 n\u00e0o \u0111\u00f3 l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb kilo, m\u1ed9t ti\u1ec1n t\u1ed1 \u0111\u01b0\u1ee3c vi\u1ebft li\u1ec1n tr\u01b0\u1edbc m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf \u0111\u1ec3 ch\u1ec9 b\u1ed9i s\u1ed1 l\u1edbn g\u1ea5p 10^3 hay 1.000 l\u1ea7n.<\/p>\n<div><ins data-ad-format=\"auto\" data-ad-client=\"ca-pub-1554526196591746\" data-adsbygoogle-status=\"done\" data-ad-status=\"unfill-optimized\"><\/p>\n<div id=\"aswift_1_host\">\n<div data-google-ad-efd=\"true\">\n<div>\n<p><span tabindex=\"0\" role=\"heading\" aria-label=\"\u0110\u00e2y l\u00e0 nh\u1eefng ch\u1ee7 \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn b\u00e0i vi\u1ebft m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 quan t\u00e2m\" aria-level=\"2\">Kh\u00e1m ph\u00e1 th\u00eam<\/span><\/p>\n<p><span title=\"tr\u1ecdng\">tr\u1ecdng<\/span><\/p>\n<p><span title=\"Qu\u1ea3n l\u00fd t\u00e0i s\u1ea3n &amp; danh m\u1ee5c v\u1ed1n \u0111\u1ea7u t\u01b0\">Qu\u1ea3n l\u00fd t\u00e0i s\u1ea3n &amp; danh m\u1ee5c v\u1ed1n \u0111\u1ea7u t\u01b0<\/span><\/p>\n<p><span title=\"L\u1ecbch s\u1eed\">L\u1ecbch s\u1eed<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><\/ins><\/div>\n<p>Ti\u1ec1n t\u1ed1 kilo c\u00f3 ngh\u0129a l\u00e0 \u201cngh\u00ecn\u201d, c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb ti\u1ebfng Hy L\u1ea1p. N\u0103m 1795, ti\u1ec1n t\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a nh\u00e0 ho\u00e1 h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Antoine Lavoisier th\u00f4ng qua v\u00e0 \u0111\u1ebfn n\u0103m 1799 n\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0 h\u1ec7 m\u00e9t \u1edf Ph\u00e1p. V\u00ed d\u1ee5, 1.000m=1km.<\/p>\n<p>B\u1ed9i s\u1ed1 kilo c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng kh\u00e1c kilogram, kilobyte\u2026<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/media.phunutoday.vn\/files\/content\/2023\/09\/08\/16-1910.jpg\" alt=\"16\" width=\"720\" height=\"960\" \/><\/figure>\n<p>Ngo\u00e0i ra, n\u0103m 2000 c\u00f3 1 s\u1ef1 ki\u1ec7n kh\u1ee7ng khi\u1ebfp \u0111\u00e3 x\u1ea3y ra v\u1edbi h\u00e0ng tri\u1ec7u m\u00e1y vi t\u00ednh tr\u00ean to\u00e0n c\u1ea7u. Tr\u01b0\u1edbc \u0111\u00f3, v\u00ec \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n n\u00ean ng\u01b0\u1eddi l\u1eadp tr\u00ecnh h\u1ec7 th\u1ed1ng ch\u1ec9 d\u00f9ng 2 con s\u1ed1 cu\u1ed1i \u0111\u1ec3 ch\u1ec9 n\u0103m. V\u00ed d\u1ee5, 1999 l\u00e0 99, 1900 l\u00e0 00\u2026 Nh\u01b0ng \u0111\u1ebfn n\u0103m 2000, m\u00e1y t\u00ednh s\u1ebd hi\u1ec3u r\u1eb1ng n\u0103m 2000 l\u00e0 n\u0103m 1900 v\u00ec 2 s\u1ed1 cu\u1ed1i \u0111\u1ec3 ch\u1ec9 n\u0103m gi\u1ed1ng nhau.<\/p>\n<p>\u0110\u1ebfn l\u00fac n\u00e0y, nh\u1eefng m\u00e1y t\u00ednh c\u00f3 s\u1eed d\u1ee5ng h\u00e0m n\u0103m (YEAR) s\u1ebd l\u00e0m vi\u1ec7c sai h\u1ebft v\u00e0 \u0111\u1ec3 l\u1ea1i h\u1eadu qu\u1ea3 kh\u00f4n l\u01b0\u1eddng. V\u00ec v\u1eady, nh\u1eb1m s\u1eeda ch\u1eefa sai s\u00f3t l\u1eadp tr\u00ecnh tr\u00ean, ng\u01b0\u1eddi ta \u0111\u00e3 \u0111\u01b0a ra 1 chi\u1ebfn d\u1ecbch tr\u00ean to\u00e0n th\u1ebf gi\u1edbi \u0111\u1ec3 \u0111\u01b0a \u0111\u1ee7 4 ch\u1eef s\u1ed1 c\u1ee7a n\u0103m v\u00e0o m\u00e1y t\u00ednh. S\u1ef1 ki\u1ec7n n\u0103m 2000 n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u1ef1 ki\u1ec7n Y2K (s\u1ef1 c\u1ed1 n\u0103m 2000).<\/p>\n<p>Ch\u00ednh v\u00ec nh\u1eefng l\u00fd do tr\u00ean m\u00e0 hi\u1ec7n nay m\u1ed9t s\u1ed1 ng\u01b0\u1eddi th\u01b0\u1eddng hay l\u1ea5y b\u1ed9i s\u1ed1 kilo \u0111\u1ec3 bi\u1ec3u th\u1ecb \u0111\u01a1n v\u1ecb h\u01a1n k\u00e9m nhau 1000 l\u1ea7n hay hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 d\u00f9ng ch\u1eef K thay th\u1ebf cho 3 s\u1ed1 0 (000).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u1edbi nhi\u1ec1u ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u1ebf h\u1ec7 tr\u1ebb th\u01b0\u1eddng d\u00f9ng ch\u1eef \u201dk\u201d thay cho k\u00fd hi\u1ec7u ti\u1ec1n. V\u00ed d\u1ee5 nh\u01b0 200k = 200.000 VND, 20k = 20.000 VND\u2026 Tuy nhi\u00ean kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u t\u1ea1i sao \u201c1k\u201d l\u1ea1i b\u1eb1ng 1000? Th\u1ef1c t\u1ebf, ch\u1eef \u201cK\u201d \u0111\u1ee9ng sau m\u1ed9t s\u1ed1 n\u00e0o \u0111\u00f3 l\u00e0 vi\u1ebft t\u1eaft [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3834,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3833","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chua-phan-loai"],"_links":{"self":[{"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/posts\/3833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3833"}],"version-history":[{"count":1,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/posts\/3833\/revisions"}],"predecessor-version":[{"id":3835,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/posts\/3833\/revisions\/3835"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=\/wp\/v2\/media\/3834"}],"wp:attachment":[{"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cauchuyendoisong.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}