{"id":10776,"date":"2024-11-27T13:11:13","date_gmt":"2024-11-27T05:11:13","guid":{"rendered":"https:\/\/www.cybermedian.com\/vn\/understanding-uml-timing-diagrams-a-comprehensive-guide\/"},"modified":"2026-04-20T17:04:30","modified_gmt":"2026-04-20T09:04:30","slug":"understanding-uml-timing-diagrams-a-comprehensive-guide","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/vn\/understanding-uml-timing-diagrams-a-comprehensive-guide\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1eddi gian UML: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n"},"content":{"rendered":"<p>Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (<a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\">UML<\/a>) <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-timing-diagram\/\">S\u01a1 \u0111\u1ed3 th\u1eddi gian<\/a>l\u00e0 m\u1ed9t lo\u1ea1i s\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng t\u00e1c t\u1eadp trung v\u00e0o c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u1ed9t h\u1ec7 th\u1ed1ng. Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c, n\u01a1i th\u1eddi gian v\u00e0 \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch c\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian UML b\u1eb1ng h\u00ecnh \u1ea3nh \u0111\u00ednh k\u00e8m l\u00e0m t\u00e0i li\u1ec7u tham kh\u1ea3o.<\/p>\n<h2>C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian UML<\/h2>\n<p><img alt=\"Timing Diagram Example\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2024\/11\/02-timing-diagram-example.png\"\/><\/p>\n<h3>1. \u0110\u01b0\u1eddng s\u1ed1ng<\/h3>\n<p>\u0110\u01b0\u1eddng s\u1ed1ng bi\u1ec3u di\u1ec5n s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c m\u1ed9t th\u00e0nh vi\u00ean theo th\u1eddi gian. Trong h\u00ecnh \u1ea3nh \u0111\u00ednh k\u00e8m, \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n l\u00e0 \u201cUser\/Acc_User\u201d v\u00e0 k\u00e9o d\u00e0i theo chi\u1ec1u d\u1ecdc, cho th\u1ea5y kho\u1ea3ng th\u1eddi gian m\u00e0 ng\u01b0\u1eddi d\u00f9ng t\u1ed3n t\u1ea1i trong h\u1ec7 th\u1ed1ng.<\/p>\n<h3>2. Tr\u1ea1ng th\u00e1i<\/h3>\n<p>C\u00e1c tr\u1ea1ng th\u00e1i l\u00e0 nh\u1eefng \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c t\u00ecnh hu\u1ed1ng m\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i. Trong s\u01a1 \u0111\u1ed3, c\u00e1c tr\u1ea1ng th\u00e1i kh\u00e1c nhau nh\u01b0 \u201cIdle\u201d, \u201cWaitCard\u201d, \u201cWaitAccess\u201d v\u00e0 \u201cCardout\u201d \u0111\u01b0\u1ee3c minh h\u1ecda. M\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t giai \u0111o\u1ea1n c\u1ee5 th\u1ec3 trong t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u1edbi h\u1ec7 th\u1ed1ng.<\/p>\n<h3>3. R\u00e0ng bu\u1ed9c th\u1eddi gian k\u00e9o d\u00e0i<\/h3>\n<p>C\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian k\u00e9o d\u00e0i x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng th\u1eddi gian m\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng d\u00e0nh trong m\u1ed9t tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3. Trong h\u00ecnh \u1ea3nh, r\u00e0ng bu\u1ed9c th\u1eddi gian k\u00e9o d\u00e0i \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng kho\u1ea3ng [d..3<em>d], c\u00f3 ngh\u0129a l\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u1edf trong tr\u1ea1ng th\u00e1i \u201cWaitAccess\u201d trong kho\u1ea3ng th\u1eddi gian t\u1eeb d \u0111\u1ebfn 3<\/em>\u0111\u01a1n v\u1ecb th\u1eddi gian.<\/p>\n<h3>4. R\u00e0ng bu\u1ed9c th\u1eddi gian<\/h3>\n<p>C\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 v\u1ec1 th\u1eddi gian gi\u1eefa c\u00e1c s\u1ef1 ki\u1ec7n kh\u00e1c nhau. Trong s\u01a1 \u0111\u1ed3, r\u00e0ng bu\u1ed9c th\u1eddi gian \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n l\u00e0 [t..t+3], cho th\u1ea5y s\u1ef1 chuy\u1ec3n \u0111\u1ed5i t\u1eeb \u201cCode\u201d sang \u201cCardout\u201d ph\u1ea3i x\u1ea3y ra trong kho\u1ea3ng t\u1eeb t \u0111\u1ebfn t+3 \u0111\u01a1n v\u1ecb th\u1eddi gian.<\/p>\n<h3>5. K\u00edch th\u00edch<\/h3>\n<p>C\u00e1c k\u00edch th\u00edch l\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u b\u00ean ngo\u00e0i g\u00e2y ra s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i. Trong h\u00ecnh \u1ea3nh, c\u00e1c k\u00edch th\u00edch \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c chuy\u1ec3n ti\u1ebfp gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i, ch\u1eb3ng h\u1ea1n nh\u01b0 chuy\u1ec3n ti\u1ebfp t\u1eeb \u201cWaitCard\u201d sang \u201cCode\u201d v\u00e0 t\u1eeb \u201cCode\u201d sang \u201cCardout\u201d.<\/p>\n<h3>6. \u0110\u01a1n v\u1ecb th\u1eddi gian<\/h3>\n<p>\u0110\u01a1n v\u1ecb th\u1eddi gian l\u00e0 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng th\u1eddi gian c\u01a1 b\u1ea3n trong s\u01a1 \u0111\u1ed3. Trong h\u00ecnh \u1ea3nh \u0111\u00ednh k\u00e8m, \u0111\u01a1n v\u1ecb th\u1eddi gian \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u00ean tr\u1ee5c ngang, v\u1edbi c\u00e1c b\u01b0\u1edbc t\u0103ng t\u1eeb 0 \u0111\u1ebfn 8. Tr\u1ee5c n\u00e0y gi\u00fap h\u00ecnh dung r\u00f5 r\u00e0ng v\u1ec1 th\u1eddi gian v\u00e0 th\u1eddi l\u01b0\u1ee3ng c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp kh\u00e1c nhau.<\/p>\n<h2>Hi\u1ec3u s\u01a1 \u0111\u1ed3 th\u1eddi gian UML<\/h2>\n<ol>\n<li><strong>Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u<\/strong>: Ng\u01b0\u1eddi d\u00f9ng b\u1eaft \u0111\u1ea7u \u1edf tr\u1ea1ng th\u00e1i \u201cIdle\u201d.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i WaitCard<\/strong>: Ng\u01b0\u1eddi d\u00f9ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i \u201cWaitCard\u201d, ch\u1edd \u0111\u1ee3i m\u1ed9t th\u1ebb \u0111\u01b0\u1ee3c \u0111\u01b0a ra.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i Code<\/strong>: Sau khi nh\u1eadn \u0111\u01b0\u1ee3c th\u1ebb, ng\u01b0\u1eddi d\u00f9ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i \u201cCode\u201d, n\u01a1i di\u1ec5n ra m\u1ed9t s\u1ed1 thao t\u00e1c x\u1eed l\u00fd ho\u1eb7c x\u00e1c minh.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i WaitAccess<\/strong>: Ng\u01b0\u1eddi d\u00f9ng sau \u0111\u00f3 chuy\u1ec3n v\u00e0o tr\u1ea1ng th\u00e1i \u201cWaitAccess\u201d, ch\u1edd \u0111\u01b0\u1ee3c c\u1ea5p quy\u1ec1n truy c\u1eadp. R\u00e0ng bu\u1ed9c th\u1eddi gian [d..3*d] cho th\u1ea5y th\u1eddi gian ch\u1edd \u0111\u01b0\u1ee3c ph\u00e9p.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i Cardout<\/strong>: Cu\u1ed1i c\u00f9ng, ng\u01b0\u1eddi d\u00f9ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i \u201cCardout\u201d, cho th\u1ea5y th\u1ebb \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 quy\u1ec1n truy c\u1eadp \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p. R\u00e0ng bu\u1ed9c th\u1eddi gian [t..t+3] \u0111\u1ea3m b\u1ea3o r\u1eb1ng chuy\u1ec3n ti\u1ebfp n\u00e0y x\u1ea3y ra trong khung th\u1eddi gian \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/li>\n<\/ol>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian UML<\/h2>\n<p>S\u01a1 \u0111\u1ed3 th\u1eddi gian UML r\u1ea5t quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>H\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c<\/strong>: C\u00e1c h\u1ec7 th\u1ed1ng m\u00e0 th\u1eddi gian l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ec7 th\u1ed1ng nh\u00fang, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng.<\/li>\n<li><strong>Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t<\/strong>: Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian.<\/li>\n<li><strong>M\u00f4 ph\u1ecfng v\u00e0 ki\u1ec3m th\u1eed<\/strong>: M\u00f4 ph\u1ecfng v\u00e0 ki\u1ec3m th\u1eed h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng d\u01b0\u1edbi c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian kh\u00e1c nhau.<\/li>\n<\/ul>\n<h2>Tr\u00ecnh b\u00e0y thay th\u1ebf c\u1ee7a s\u01a1 \u0111\u1ed3 th\u1eddi gian UML<\/h2>\n<p><a href=\"file:\/\/\/C:\/Users\/Curtis\/Downloads\/timing-diagram.pdf\">S\u01a1 \u0111\u1ed3 th\u1eddi gian UML<\/a>c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y theo c\u00e1c phong c\u00e1ch kh\u00e1c nhau trong khi truy\u1ec1n \u0111\u1ea1t c\u00f9ng m\u1ed9t th\u00f4ng tin. C\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf trong h\u00ecnh \u1ea3nh th\u1ee9 hai \u0111\u01a1n gi\u1ea3n h\u00f3a bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh b\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 r\u00e0ng bu\u1ed9c th\u1eddi gian m\u00e0 kh\u00f4ng hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c k\u00edch th\u00edch v\u00e0 r\u00e0ng bu\u1ed9c th\u1eddi gian. D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i s\u1ebd th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf v\u00e0 gi\u1ea3i th\u00edch t\u1ea1i sao hai s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh trong c\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf<\/h3>\n<p><img alt=\"Compact view of Timing Diagram\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2024\/11\/03-compact-view-of-timing-timing.png\"\/><\/p>\n<ol>\n<li><strong>\u0110\u01b0\u1eddng s\u1ed1ng<\/strong>: \u0110\u01b0\u1eddng s\u1ed1ng v\u1eabn gi\u1eef nguy\u00ean, bi\u1ec3u di\u1ec5n s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a \u201cNg\u01b0\u1eddi d\u00f9ng\/Acc_User\u201d theo th\u1eddi gian.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i<\/strong>: C\u00e1c tr\u1ea1ng th\u00e1i \u201cNg\u01b0ng,\u201d \u201cCh\u1edd th\u1ebb,\u201d \u201cCh\u1edd truy c\u1eadp,\u201d v\u00e0 \u201cNg\u01b0ng\u201d \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n r\u00f5 r\u00e0ng. Ng\u01b0\u1eddi d\u00f9ng chuy\u1ec3n qua c\u00e1c tr\u1ea1ng th\u00e1i n\u00e0y theo th\u1ee9 t\u1ef1 tu\u1ea7n t\u1ef1.<\/li>\n<li><strong>R\u00e0ng bu\u1ed9c th\u1eddi gian<\/strong>: R\u00e0ng bu\u1ed9c th\u1eddi gian [d..3*d] \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb cho tr\u1ea1ng th\u00e1i \u201cCh\u1edd truy c\u1eadp\u201d, cho th\u1ea5y th\u1eddi gian ch\u1edd \u0111\u01b0\u1ee3c ph\u00e9p.<\/li>\n<\/ol>\n<h3>T\u00ednh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng gi\u1eefa hai s\u01a1 \u0111\u1ed3<\/h3>\n<ol>\n<li><strong>\u0110\u01b0\u1eddng s\u1ed1ng<\/strong>: C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng bi\u1ec3u di\u1ec5n \u201cNg\u01b0\u1eddi d\u00f9ng\/Acc_User\u201d trong c\u00f9ng m\u1ed9t kho\u1ea3ng th\u1eddi gian.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i<\/strong>: Th\u1ee9 t\u1ef1 c\u00e1c tr\u1ea1ng th\u00e1i l\u00e0 gi\u1ed1ng nhau trong c\u1ea3 hai s\u01a1 \u0111\u1ed3: \u201cNg\u01b0ng\u201d \u2192 \u201cCh\u1edd th\u1ebb\u201d \u2192 \u201cCh\u1edd truy c\u1eadp\u201d \u2192 \u201cNg\u01b0ng.\u201d<\/li>\n<li><strong>R\u00e0ng bu\u1ed9c th\u1eddi gian<\/strong>: C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u x\u00e1c \u0111\u1ecbnh r\u00e0ng bu\u1ed9c th\u1eddi gian [d..3*d] cho tr\u1ea1ng th\u00e1i \u201cCh\u1edd truy c\u1eadp\u201d.<\/li>\n<li><strong>R\u00e0ng bu\u1ed9c th\u1eddi gian ng\u1ea7m<\/strong>: M\u1eb7c d\u00f9 c\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf kh\u00f4ng hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian, nh\u01b0ng ch\u00fang \u0111\u01b0\u1ee3c hi\u1ec3u ng\u1ea7m. C\u00e1c chuy\u1ec3n ti\u1ebfp gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i x\u1ea3y ra theo th\u1ee9 t\u1ef1, v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/li>\n<\/ol>\n<h3>So s\u00e1nh chi ti\u1ebft<\/h3>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u<\/strong>: C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u b\u1eaft \u0111\u1ea7u t\u1eeb tr\u1ea1ng th\u00e1i \u201cKh\u00f4ng ho\u1ea1t \u0111\u1ed9ng\u201d.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i Ch\u1edd Th\u1ebb<\/strong>: S\u1ef1 chuy\u1ec3n ti\u1ebfp sang tr\u1ea1ng th\u00e1i \u201cCh\u1edd Th\u1ebb\u201d \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong c\u1ea3 hai s\u01a1 \u0111\u1ed3, cho th\u1ea5y ng\u01b0\u1eddi d\u00f9ng \u0111ang ch\u1edd th\u1ebb.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i Ch\u1edd Truy c\u1eadp<\/strong>: Tr\u1ea1ng th\u00e1i \u201cCh\u1edd Truy c\u1eadp\u201d v\u1edbi r\u00e0ng bu\u1ed9c th\u1eddi gian [d..3*d] xu\u1ea5t hi\u1ec7n trong c\u1ea3 hai s\u01a1 \u0111\u1ed3, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng ch\u1edd trong kho\u1ea3ng th\u1eddi gian \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i cu\u1ed1i<\/strong>: C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i \u201cKh\u00f4ng ho\u1ea1t \u0111\u1ed9ng\u201d sau tr\u1ea1ng th\u00e1i \u201cCh\u1edd Truy c\u1eadp\u201d, ho\u00e0n th\u00e0nh chu k\u1ef3.<\/li>\n<\/ul>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a c\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf<\/h3>\n<ul>\n<li><strong>\u0110\u01a1n gi\u1ea3n<\/strong>: C\u00e1ch tr\u00ecnh b\u00e0y thay th\u1ebf \u0111\u01a1n gi\u1ea3n h\u01a1n v\u00e0 d\u1ec5 hi\u1ec3u h\u01a1n, t\u1eadp trung v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam chi ti\u1ebft.<\/li>\n<li><strong>R\u00f5 r\u00e0ng<\/strong>: B\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf c\u00e1c k\u00edch th\u00edch r\u00f5 r\u00e0ng v\u00e0 r\u00e0ng bu\u1ed9c th\u1eddi gian, s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean \u00edt r\u1ed1i h\u01a1n, gi\u00fap d\u1ec5 h\u00ecnh dung c\u00e1c chuy\u1ec3n ti\u1ebfp tr\u1ea1ng th\u00e1i v\u00e0 r\u00e0ng bu\u1ed9c th\u1eddi gian.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2586_timingdiagra.html\">S\u01a1 \u0111\u1ed3 Th\u1eddi gian UML<\/a> cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian v\u00e0 th\u1eddi l\u01b0\u1ee3ng c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u1ed9t h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh nh\u01b0 \u0111\u01b0\u1eddng s\u1ed1ng, tr\u1ea1ng th\u00e1i, r\u00e0ng bu\u1ed9c th\u1eddi l\u01b0\u1ee3ng, r\u00e0ng bu\u1ed9c th\u1eddi gian, k\u00edch th\u00edch v\u00e0 \u0111\u01a1n v\u1ecb th\u1eddi gian, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 m\u00f4 h\u00ecnh h\u00f3a v\u00e0 ph\u00e2n t\u00edch hi\u1ec7u qu\u1ea3 h\u00e0nh vi c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c. H\u00ecnh \u1ea3nh \u0111\u00ednh k\u00e8m \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, minh h\u1ecda c\u00e1ch c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong m\u1ed9t t\u00ecnh hu\u1ed1ng \u0111i\u1ec3n h\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) S\u01a1 \u0111\u1ed3 th\u1eddi gianl\u00e0 m\u1ed9t lo\u1ea1i s\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng t\u00e1c t\u1eadp trung<\/p>\n","protected":false},"author":1,"featured_media":10777,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-10776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - 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