{"id":755,"date":"2026-03-26T19:44:57","date_gmt":"2026-03-26T19:44:57","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vi\/state-diagrams-state-machines-guide\/"},"modified":"2026-03-26T19:44:57","modified_gmt":"2026-03-26T19:44:57","slug":"state-diagrams-state-machines-guide","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vi\/state-diagrams-state-machines-guide\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i cho m\u00e1y tr\u1ea1ng th\u00e1i: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n cho sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc m\u00e1y t\u00ednh"},"content":{"rendered":"<p>Trong l\u0129nh v\u1ef1c khoa h\u1ecdc m\u00e1y t\u00ednh, m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c vi\u1ebft m\u00e3 ngu\u1ed3n. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a c\u00e1ch h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng v\u1edbi \u0111\u1ea7u v\u00e0o theo th\u1eddi gian l\u00e0 s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i. Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m b\u1ec1n v\u1eefng, hi\u1ec3u \u0111\u01b0\u1ee3c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c giao th\u1ee9c v\u00e0 x\u00e1c \u0111\u1ecbnh lu\u1ed3ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 m\u00e1y tr\u1ea1ng th\u00e1i, c\u00e1c bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda c\u1ee7a ch\u00fang v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<p>D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf giao th\u1ee9c m\u1ea1ng, tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o cho nh\u00e2n v\u1eadt tr\u00f2 ch\u01a1i hay logic m\u00e1y b\u00e1n h\u00e0ng t\u1ef1 \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n, vi\u1ec7c hi\u1ec3u \u0111\u01b0\u1ee3c v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng qua nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau l\u00e0 r\u1ea5t quan tr\u1ecdng. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c th\u00e0nh ph\u1ea7n, lo\u1ea1i h\u00ecnh, ph\u01b0\u01a1ng ph\u00e1p x\u00e2y d\u1ef1ng v\u00e0 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn li\u00ean quan \u0111\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Educational infographic on state diagrams for finite state machines: features core components (states, transitions, events), traffic light controller example with labeled transitions, four FSM types (Mealy, Moore, deterministic, non-deterministic), real-world applications in UI design, networking, game dev, and embedded systems, common pitfalls to avoid, and best practices checklist - rendered in clean flat design with pastel accents, rounded shapes, and black outlines for student-friendly learning\" decoding=\"async\" src=\"https:\/\/www.visualize-ai.com\/wp-content\/uploads\/2026\/03\/state-diagrams-fsm-infographic-guide.jpg\"\/><\/figure>\n<\/div>\n<h2>M\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 g\u00ec? \ud83d\udd0d<\/h2>\n<p>M\u00e1y tr\u1ea1ng th\u00e1i, \u0111\u01b0\u1ee3c g\u1ecdi ch\u00ednh th\u1ee9c l\u00e0 m\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n (FSM) trong nhi\u1ec1u ng\u1eef c\u1ea3nh, l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc v\u1ec1 t\u00ednh to\u00e1n. N\u00f3 m\u00f4 t\u1ea3 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u1edf m\u1ed9t trong m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng h\u1eefu h\u1ea1n tr\u1ea1ng th\u00e1i t\u1ea1i b\u1ea5t k\u1ef3 th\u1eddi \u0111i\u1ec3m n\u00e0o. M\u00e1y s\u1ebd chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c khi ph\u1ea3n \u1ee9ng v\u1edbi m\u1ed9t s\u1ed1 k\u00edch ho\u1ea1t b\u00ean ngo\u00e0i, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c m\u1ed9t s\u1ef1 ki\u1ec7n h\u1ec7 th\u1ed1ng.<\/p>\n<p>Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u1eadp h\u1ee3p h\u1eefu h\u1ea1n c\u00e1c tr\u1ea1ng th\u00e1i:<\/strong> H\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 \u0111\u1ed3ng th\u1eddi \u1edf trong m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng v\u00f4 h\u1ea1n c\u00e1c c\u1ea5u h\u00ecnh.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n:<\/strong> C\u00e1c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t khi\u1ebfn m\u00e1y chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c.<\/li>\n<li><strong>Chuy\u1ec3n ti\u1ebfp:<\/strong> \u0110\u01b0\u1eddng \u0111i c\u00f3 h\u01b0\u1edbng gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i khi m\u1ed9t s\u1ef1 ki\u1ec7n x\u1ea3y ra.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u:<\/strong> \u0110i\u1ec3m kh\u1edfi \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh th\u1ef1c thi m\u00e1y.<\/li>\n<li><strong>C\u00e1c tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac:<\/strong> C\u00e1c \u0111i\u1ec3m k\u1ebft th\u00fac n\u01a1i qu\u00e1 tr\u00ecnh k\u1ebft th\u00fac.<\/li>\n<\/ul>\n<p>S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 k\u00fd hi\u1ec7u tr\u1ef1c quan \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c m\u00e1y n\u00e0y. Ch\u00fang cung c\u1ea5p b\u1ea3n \u0111\u1ed3 r\u00f5 r\u00e0ng v\u1ec1 logic c\u1ee7a h\u1ec7 th\u1ed1ng, gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng ph\u00e1t hi\u1ec7n l\u1ed7i logic tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u tri\u1ec3n khai.<\/p>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i \ud83e\udde9<\/h2>\n<p>\u0110\u1ec3 v\u1ebd m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i h\u1ee3p l\u1ec7, ng\u01b0\u1eddi ta ph\u1ea3i hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n. M\u1ed7i th\u00e0nh ph\u1ea7n \u0111\u1ec1u c\u00f3 m\u1ed9t m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3 trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3>1. Tr\u1ea1ng th\u00e1i<\/h3>\n<p>M\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c tr\u1ea1ng th\u00e1i trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 x\u00e1c \u0111\u1ecbnh h\u1ec7 th\u1ed1ng \u0111ang l\u00e0m g\u00ec v\u00e0o m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. C\u00e1c tr\u1ea1ng th\u00e1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt tr\u00f2n.<\/p>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i \u0111\u01a1n gi\u1ea3n:<\/strong> M\u1ed9t tr\u1ea1ng th\u00e1i kh\u00f4ng th\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n n\u1eefa.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i ph\u1ee9c h\u1ee3p:<\/strong> M\u1ed9t tr\u1ea1ng th\u00e1i ch\u1ee9a c\u00e1c tr\u1ea1ng th\u00e1i con l\u1ed3ng gh\u00e9p b\u00ean trong, cho ph\u00e9p m\u00f4 h\u00ecnh h\u00f3a theo c\u1ea5p \u0111\u1ed9 ph\u00e2n c\u1ea5p.<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng v\u00e0o\/ra:<\/strong> C\u00e1c thao t\u00e1c c\u1ee5 th\u1ec3 x\u1ea3y ra khi v\u00e0o ho\u1eb7c r\u1eddi kh\u1ecfi m\u1ed9t tr\u1ea1ng th\u00e1i.<\/li>\n<\/ul>\n<h3>2. Chuy\u1ec3n ti\u1ebfp<\/h3>\n<p>C\u00e1c chuy\u1ec3n ti\u1ebfp l\u00e0 c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i. Ch\u00fang ch\u1ec9 ra h\u01b0\u1edbng d\u00f2ng ch\u1ea3y. M\u1ed9t chuy\u1ec3n ti\u1ebfp \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi m\u1ed9t s\u1ef1 ki\u1ec7n.<\/p>\n<ul>\n<li><strong>K\u00edch ho\u1ea1t:<\/strong> S\u1ef1 ki\u1ec7n kh\u1edfi ph\u00e1t chuy\u1ec3n ti\u1ebfp (v\u00ed d\u1ee5: nh\u1ea5n n\u00fat, h\u1ebft th\u1eddi gian h\u1eb9n gi\u1edd).<\/li>\n<li><strong> \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong> M\u1ed9t bi\u1ec3u th\u1ee9c logic ph\u1ea3i \u0111\u00fang \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp x\u1ea3y ra. N\u1ebfu \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 sai, chuy\u1ec3n ti\u1ebfp s\u1ebd b\u1ecb b\u1ecf qua.<\/li>\n<li><strong> H\u00e0nh \u0111\u1ed9ng:<\/strong> M\u1ed9t thao t\u00e1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp (v\u00ed d\u1ee5: t\u0103ng gi\u00e1 tr\u1ecb b\u1ed9 \u0111\u1ebfm).<\/li>\n<\/ul>\n<h3>3. S\u1ef1 ki\u1ec7n v\u00e0 t\u00edn hi\u1ec7u<\/h3>\n<p>C\u00e1c s\u1ef1 ki\u1ec7n l\u00e0 nh\u1eefng s\u1ef1 ki\u1ec7n x\u1ea3y ra l\u00e0m k\u00edch ho\u1ea1t thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0:<\/p>\n<ul>\n<li><strong>\u0110\u1ed3ng b\u1ed9:<\/strong> G\u00e2y ra b\u1edfi m\u1ed9t y\u00eau c\u1ea7u r\u00f5 r\u00e0ng.<\/li>\n<li><strong>B\u1ea5t \u0111\u1ed3ng b\u1ed9:<\/strong> G\u00e2y ra b\u1edfi c\u00e1c y\u1ebfu t\u1ed1 b\u00ean ngo\u00e0i nh\u01b0 ng\u1eaft ph\u1ea7n c\u1ee9ng.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i m\u00e1y tr\u1ea1ng th\u00e1i \u2699\ufe0f<\/h2>\n<p>Kh\u00f4ng ph\u1ea3i m\u1ecdi m\u00e1y tr\u1ea1ng th\u00e1i n\u00e0o c\u0169ng gi\u1ed1ng nhau. C\u00e1c t\u00ecnh hu\u1ed1ng kh\u00e1c nhau \u0111\u00f2i h\u1ecfi c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c nhau. Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t s\u1ebd gi\u00fap l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t cho v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>M\u00e1y Mealy<\/strong><\/td>\n<td>\u0110\u1ea7u ra ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea3 tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i v\u00e0 s\u1ef1 ki\u1ec7n \u0111\u1ea7u v\u00e0o.<\/td>\n<td>Hi\u1ec7u qu\u1ea3 cho c\u00e1c h\u1ec7 th\u1ed1ng m\u00e0 th\u1eddi gian \u0111\u1ea7u ra r\u1ea5t quan tr\u1ecdng so v\u1edbi \u0111\u1ea7u v\u00e0o.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e1y Moore<\/strong><\/td>\n<td>\u0110\u1ea7u ra ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i.<\/td>\n<td>C\u00e1c h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh b\u1ea5t k\u1ec3 nhi\u1ec5u \u0111\u1ea7u v\u00e0o t\u1ea1m th\u1eddi.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n x\u00e1c \u0111\u1ecbnh<\/strong><\/td>\n<td>V\u1edbi m\u1ed9t tr\u1ea1ng th\u00e1i v\u00e0 \u0111\u1ea7u v\u00e0o nh\u1ea5t \u0111\u1ecbnh, ch\u1ec9 c\u00f3 \u0111\u00fang m\u1ed9t tr\u1ea1ng th\u00e1i ti\u1ebfp theo.<\/td>\n<td>H\u1ea7u h\u1ebft logic ph\u1ea7n m\u1ec1m v\u00e0 \u0111\u1ecbnh ngh\u0129a giao th\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n kh\u00f4ng x\u00e1c \u0111\u1ecbnh<\/strong><\/td>\n<td>Nhi\u1ec1u tr\u1ea1ng th\u00e1i ti\u1ebfp theo c\u00f3 th\u1ec3 x\u1ea3y ra cho c\u00f9ng m\u1ed9t \u0111\u1ea7u v\u00e0o.<\/td>\n<td>C\u00e1c m\u00f4 h\u00ecnh l\u00fd thuy\u1ebft v\u00e0 c\u00e1c thu\u1eadt to\u00e1n ph\u00e2n t\u00edch c\u1ee5 th\u1ec3.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i: B\u01b0\u1edbc t\u1eebng b\u01b0\u1edbc \ud83d\udee0\ufe0f<\/h2>\n<p>Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ebd c\u00e1c h\u00ecnh h\u1ed9p v\u00e0 m\u0169i t\u00ean. N\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng trong ph\u00e2n t\u00edch y\u00eau c\u1ea7u.<\/p>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng<\/h3>\n<p>X\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec n\u1eb1m b\u00ean trong h\u1ec7 th\u1ed1ng v\u00e0 nh\u1eefng g\u00ec n\u1eb1m b\u00ean ngo\u00e0i. X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i. Li\u1ec7u n\u00f3 c\u00f3 ph\u1ea3i l\u00e0 to\u00e0n b\u1ed9 \u1ee9ng d\u1ee5ng, m\u1ed9t m\u00f4-\u0111un c\u1ee5 th\u1ec3 hay ch\u1ec9 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng duy nh\u1ea5t?<\/p>\n<h3>B\u01b0\u1edbc 2: Li\u1ec7t k\u00ea c\u00e1c tr\u1ea1ng th\u00e1i ti\u1ec1m n\u0103ng<\/h3>\n<p>Th\u1ea3o lu\u1eadn t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng. Tr\u00e1nh c\u00e1c tr\u1ea1ng th\u00e1i m\u01a1 h\u1ed3 nh\u01b0 \u201c\u0110ang x\u1eed l\u00fd\u201d tr\u1eeb khi th\u1eddi gian k\u00e9o d\u00e0i l\u00e0 \u0111\u00e1ng k\u1ec3. H\u00e3y c\u1ee5 th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 \u201c\u0110ang t\u00ednh thu\u1ebf\u201d ho\u1eb7c \u201c\u0110ang ch\u1edd \u0111\u1ea7u v\u00e0o\u201d.<\/p>\n<h3>B\u01b0\u1edbc 3: X\u00e1c \u0111\u1ecbnh s\u1ef1 ki\u1ec7n v\u00e0 c\u00e1c k\u00edch ho\u1ea1t<\/h3>\n<p>\u0110i\u1ec1u g\u00ec khi\u1ebfn h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i? Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 c\u00e1c h\u00e0nh \u0111\u1ed9ng ng\u01b0\u1eddi d\u00f9ng, t\u00edn hi\u1ec7u h\u1ec7 th\u1ed1ng v\u00e0 th\u1eddi gian ch\u1edd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea1ng th\u00e1i.<\/p>\n<h3>B\u01b0\u1edbc 4: B\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c chuy\u1ec3n ti\u1ebfp<\/h3>\n<p>K\u1ebft n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i b\u1eb1ng c\u00e1c m\u0169i t\u00ean. \u0110\u1ea3m b\u1ea3o m\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ec1u c\u00f3 \u0111\u01b0\u1eddng \u0111i \u0111\u1ebfn m\u1ecdi tr\u1ea1ng th\u00e1i kh\u00e1c n\u1ebfu h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 k\u1ebft n\u1ed1i ho\u00e0n to\u00e0n. \u0110\u00e1nh d\u1ea5u tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u b\u1eb1ng h\u00ecnh tr\u00f2n \u0111\u1ea7y m\u00e0u v\u00e0 c\u00e1c tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac b\u1eb1ng h\u00ecnh tr\u00f2n k\u00e9p.<\/p>\n<h3>B\u01b0\u1edbc 5: Th\u00eam h\u00e0nh \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/h3>\n<p>Ghi ch\u00fa c\u00e1c chuy\u1ec3n ti\u1ebfp b\u1eb1ng logic c\u1ea7n thi\u1ebft. X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 khi chuy\u1ec3n ti\u1ebfp l\u00e0 c\u00f3 \u0111i\u1ec1u ki\u1ec7n. X\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec x\u1ea3y ra b\u00ean trong tr\u1ea1ng th\u00e1i (h\u00e0nh \u0111\u1ed9ng l\u00e0m) so v\u1edbi nh\u1eefng g\u00ec x\u1ea3y ra trong qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp (h\u00e0nh \u0111\u1ed9ng chuy\u1ec3n ti\u1ebfp).<\/p>\n<h2>V\u00ed d\u1ee5: B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e8n giao th\u00f4ng \ud83d\udea6<\/h2>\n<p>\u0110\u1ec3 minh h\u1ecda c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y, h\u00e3y c\u00f9ng \u0111i qua m\u1ed9t v\u00ed d\u1ee5 kinh \u0111i\u1ec3n: h\u1ec7 th\u1ed1ng \u0111\u00e8n giao th\u00f4ng. H\u1ec7 th\u1ed1ng n\u00e0y qu\u1ea3n l\u00fd lu\u1ed3ng ph\u01b0\u01a1ng ti\u1ec7n t\u1ea1i m\u1ed9t ng\u00e3 t\u01b0.<\/p>\n<h3>Y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng<\/h3>\n<ul>\n<li>\u0110\u00e8n ph\u1ea3i lu\u00e2n phi\u00ean gi\u1eefa \u0110\u1ecf, V\u00e0ng v\u00e0 Xanh.<\/li>\n<li>N\u00fat b\u1ea5m d\u00e0nh cho ng\u01b0\u1eddi \u0111i b\u1ed9 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u thay \u0111\u1ed5i.<\/li>\n<li>C\u00e1c b\u1ed9 \u0111\u1ebfm th\u1eddi gian ki\u1ec3m so\u00e1t th\u1eddi gian cho m\u1ed7i m\u00e0u.<\/li>\n<\/ul>\n<h3>\u0110\u1ecbnh ngh\u0129a tr\u1ea1ng th\u00e1i<\/h3>\n<ul>\n<li><strong>Ng\u01b0ng ho\u1ea1t \u0111\u1ed9ng:<\/strong> H\u1ec7 th\u1ed1ng \u0111ang t\u1eaft ho\u1eb7c \u0111ang \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n<li><strong>\u0110\u1ecf:<\/strong> Giao th\u00f4ng \u0111ang b\u1ecb d\u1eebng l\u1ea1i.<\/li>\n<li><strong>Xanh:<\/strong> Giao th\u00f4ng \u0111ang l\u01b0u th\u00f4ng.<\/li>\n<li><strong>V\u00e0ng:<\/strong> Giai \u0111o\u1ea1n c\u1ea3nh b\u00e1o tr\u01b0\u1edbc khi chuy\u1ec3n sang \u0111\u1ecf.<\/li>\n<\/ul>\n<h3>Logic chuy\u1ec3n ti\u1ebfp<\/h3>\n<ol>\n<li><strong>B\u1eaft \u0111\u1ea7u \u2794 \u0110\u1ecf:<\/strong> Khi kh\u1edfi t\u1ea1o, h\u1ec7 th\u1ed1ng b\u1eaft \u0111\u1ea7u \u1edf tr\u1ea1ng th\u00e1i \u0110\u1ecf.<\/li>\n<li><strong>\u0110\u1ecf \u2794 Xanh:<\/strong> Sau m\u1ed9t b\u1ed9 \u0111\u1ebfm th\u1eddi gian c\u1ed1 \u0111\u1ecbnh (v\u00ed d\u1ee5: 60 gi\u00e2y), chuy\u1ec3n sang Xanh.<\/li>\n<li><strong>Xanh \u2794 V\u00e0ng:<\/strong> Sau m\u1ed9t b\u1ed9 \u0111\u1ebfm th\u1eddi gian c\u1ed1 \u0111\u1ecbnh (v\u00ed d\u1ee5: 30 gi\u00e2y), chuy\u1ec3n sang V\u00e0ng.<\/li>\n<li><strong>V\u00e0ng \u2794 \u0110\u1ecf:<\/strong> Sau m\u1ed9t b\u1ed9 \u0111\u1ebfm th\u1eddi gian ng\u1eafn (v\u00ed d\u1ee5: 5 gi\u00e2y), chuy\u1ec3n tr\u1edf l\u1ea1i \u0110\u1ecf.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n kh\u1ea9n c\u1ea5p \u2794 \u0110\u1ecf:<\/strong> B\u1ea5t k\u1ec3 tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i, m\u1ed9t t\u00edn hi\u1ec7u kh\u1ea9n c\u1ea5p bu\u1ed9c h\u1ec7 th\u1ed1ng chuy\u1ec3n sang \u0110\u1ecf.<\/li>\n<\/ol>\n<h2>B\u1ea3ng chuy\u1ec3n tr\u1ea1ng th\u00e1i \ud83d\udcca<\/h2>\n<p>M\u1eb7c d\u00f9 s\u01a1 \u0111\u1ed3 mang t\u00ednh tr\u1ef1c quan, b\u1ea3ng th\u01b0\u1eddng thu\u1eadn ti\u1ec7n h\u01a1n khi tri\u1ec3n khai. B\u1ea3ng chuy\u1ec3n tr\u1ea1ng th\u00e1i \u00e1nh x\u1ea1 tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i v\u00e0 s\u1ef1 ki\u1ec7n \u0111\u1ea7u v\u00e0o sang tr\u1ea1ng th\u00e1i ti\u1ebfp theo v\u00e0 h\u00e0nh \u0111\u1ed9ng \u0111\u1ea7u ra. \u0110\u1ecbnh d\u1ea1ng n\u00e0y d\u1ec5 d\u00e0ng chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp th\u00e0nh m\u00e3 ngu\u1ed3n.<\/p>\n<table>\n<thead>\n<tr>\n<th>Tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i<\/th>\n<th>S\u1ef1 ki\u1ec7n<\/th>\n<th>\u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/th>\n<th>Tr\u1ea1ng th\u00e1i ti\u1ebfp theo<\/th>\n<th>H\u00e0nh \u0111\u1ed9ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ecf<\/td>\n<td>B\u1ed9 \u0111\u1ebfm th\u1eddi gian h\u1ebft h\u1ea1n<\/td>\n<td>\u0110\u00fang<\/td>\n<td>Xanh<\/td>\n<td>B\u1eadt \u0111\u00e8n Xanh<\/td>\n<\/tr>\n<tr>\n<td>Xanh<\/td>\n<td>B\u1ed9 \u0111\u1ebfm th\u1eddi gian h\u1ebft h\u1ea1n<\/td>\n<td>\u0110\u00fang<\/td>\n<td>V\u00e0ng<\/td>\n<td>B\u1eadt \u0111\u00e8n V\u00e0ng<\/td>\n<\/tr>\n<tr>\n<td>V\u00e0ng<\/td>\n<td>B\u1ed9 \u0111\u1ebfm th\u1eddi gian h\u1ebft h\u1ea1n<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u1ecf<\/td>\n<td>B\u1eadt \u0111\u00e8n \u0110\u1ecf<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea5t k\u1ef3<\/td>\n<td>T\u00edn hi\u1ec7u kh\u1ea9n c\u1ea5p<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u1ecf<\/td>\n<td>\u0110\u1eb7t l\u1ea1i t\u1ea5t c\u1ea3 b\u1ed9 \u0111\u1ebfm th\u1eddi gian<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c m\u1eabu ch\u1ed1ng l\u1ea1i \u26a0\ufe0f<\/h2>\n<p>Thi\u1ebft k\u1ebf m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 \u0111\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft nh\u01b0ng l\u1ea1i kh\u00f3 kh\u0103n trong th\u1ef1c t\u1ebf. M\u1ed9t s\u1ed1 l\u1ed7i ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u00e0nh vi kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc \u0111\u01b0\u1ee3c trong c\u00e1c h\u1ec7 th\u1ed1ng s\u1ea3n xu\u1ea5t.<\/p>\n<h3>1. Ch\u1ebft ch\u1eafn<\/h3>\n<p>Ch\u1ebft ch\u1eafn x\u1ea3y ra khi h\u1ec7 th\u1ed1ng \u0111i v\u00e0o tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng c\u00f3 chuy\u1ec3n ti\u1ebfp n\u00e0o kh\u1ea3 thi, m\u1eb7c d\u00f9 qu\u00e1 tr\u00ecnh v\u1eabn ch\u01b0a k\u1ebft th\u00fac. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra n\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n c\u1ea7n thi\u1ebft kh\u00f4ng bao gi\u1edd \u0111\u1ebfn. H\u00e3y lu\u00f4n \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ec1u c\u00f3 \u00edt nh\u1ea5t m\u1ed9t chuy\u1ec3n ti\u1ebfp ra ho\u1eb7c m\u1ed9t b\u1ed9 x\u1eed l\u00fd l\u1ed7i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/p>\n<h3>2. Chuy\u1ec3n ti\u1ebfp gi\u1ea3 m\u1ea1o<\/h3>\n<p>Vi\u1ec7c th\u00eam qu\u00e1 nhi\u1ec1u chuy\u1ec3n ti\u1ebfp khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 chuy\u1ec3n ti\u1ebfp cho m\u1ecdi s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ebfn m\u1ecdi tr\u1ea1ng th\u00e1i kh\u00e1c, logic s\u1ebd tr\u1edf n\u00ean h\u1ed7n \u0111\u1ed9n. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c chuy\u1ec3n ti\u1ebfp m\u1eb7c \u0111\u1ecbnh ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a.<\/p>\n<h3>3. Thi\u1ebfu x\u1eed l\u00fd l\u1ed7i<\/h3>\n<p>\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu \u0111\u1ea7u v\u00e0o kh\u00f4ng h\u1ee3p l\u1ec7? M\u1ed9t m\u00e1y tr\u1ea1ng th\u00e1i m\u1ea1nh m\u1ebd ph\u1ea3i x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n b\u1ea5t ng\u1edd m\u1ed9t c\u00e1ch tr\u01a1n tru, th\u01b0\u1eddng b\u1eb1ng c\u00e1ch duy tr\u00ec \u1edf tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i ho\u1eb7c chuy\u1ec3n sang tr\u1ea1ng th\u00e1i l\u1ed7i.<\/p>\n<h3>4. Qu\u00e1 ph\u1ee9c t\u1ea1p<\/h3>\n<p>\u0110\u1eebng c\u1ed1 g\u1eafng m\u00f4 h\u00ecnh h\u00f3a m\u1ecdi th\u1ee9 trong m\u1ed9t m\u00e1y duy nh\u1ea5t. N\u1ebfu s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i tr\u1edf n\u00ean qu\u00e1 l\u1edbn (h\u01a1n 20 tr\u1ea1ng th\u00e1i), h\u00e3y c\u00e2n nh\u1eafc chia nh\u1ecf th\u00e0nh c\u00e1c m\u00e1y con ho\u1eb7c s\u1eed d\u1ee5ng m\u00e1y tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ea5p.<\/p>\n<h2>\u1ee8ng d\u1ee5ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m \ud83d\udcbb<\/h2>\n<p>S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf c\u00e1c b\u00e0i t\u1eadp l\u00fd thuy\u1ebft. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h3>1. Lu\u1ed3ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (UI)<\/h3>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng th\u01b0\u1eddng tu\u00e2n theo logic d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i. V\u00ed d\u1ee5, vi\u1ec7c g\u1eedi bi\u1ec3u m\u1eabu c\u00f3 th\u1ec3 c\u00f3 c\u00e1c tr\u1ea1ng th\u00e1i nh\u01b0 <em>Ng\u01b0ng ho\u1ea1t \u0111\u1ed9ng<\/em>, <em>\u0110ang x\u00e1c th\u1ef1c<\/em>, <em>\u0110ang g\u1eedi<\/em>, <em>Th\u00e0nh c\u00f4ng<\/em>, ho\u1eb7c <em>L\u1ed7i<\/em>. Qu\u1ea3n l\u00fd c\u00e1c tr\u1ea1ng th\u00e1i n\u00e0y gi\u00fap ng\u0103n ng\u01b0\u1eddi d\u00f9ng g\u1eedi y\u00eau c\u1ea7u tr\u00f9ng l\u1eb7p.<\/p>\n<h3>2. Giao th\u1ee9c m\u1ea1ng<\/h3>\n<p>C\u00e1c giao th\u1ee9c nh\u01b0 TCP ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o m\u00e1y tr\u1ea1ng th\u00e1i. Chu k\u1ef3 s\u1ed1ng k\u1ebft n\u1ed1i (SYN, ESTABLISHED, CLOSE_WAIT, v.v.) l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 tri\u1ec3n khai m\u00e1y tr\u1ea1ng th\u00e1i. Hi\u1ec3u r\u00f5 \u0111i\u1ec1u n\u00e0y gi\u00fap kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 m\u1ea1ng hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<h3>3. Ph\u00e1t tri\u1ec3n tr\u00f2 ch\u01a1i<\/h3>\n<p>AI nh\u00e2n v\u1eadt th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u00e1y tr\u1ea1ng th\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00e0nh vi. M\u1ed9t nh\u00e2n v\u1eadt c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa <em>\u0110ang ngh\u1ec9<\/em>, <em>\u0110u\u1ed5i theo<\/em>, <em>T\u1ea5n c\u00f4ng<\/em>, v\u00e0 <em>Tr\u1ed1n ch\u1ea1y<\/em> d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch \u0111\u1ebfn ng\u01b0\u1eddi ch\u01a1i v\u00e0 \u0111i\u1ec3m s\u1ee9c kh\u1ecfe.<\/p>\n<h3>4. H\u1ec7 th\u1ed1ng nh\u00fang<\/h3>\n<p>C\u00e1c vi \u0111i\u1ec1u khi\u1ec3n th\u01b0\u1eddng ch\u1ea1y m\u00e1y tr\u1ea1ng th\u00e1i \u0111\u1ec3 qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean ph\u1ea7n c\u1ee9ng. M\u1ed9t v\u00f2ng \u0111\u1ecdc c\u1ea3m bi\u1ebfn c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa <em>\u0110i\u1ec1u ch\u1ec9nh<\/em>, <em>\u0110\u1ecdc<\/em>, v\u00e0 <em>Truy\u1ec1n t\u1ea3i<\/em> c\u00e1c tr\u1ea1ng th\u00e1i.<\/p>\n<h2>C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho thi\u1ebft k\u1ebf \ud83d\udcdd<\/h2>\n<p>\u0110\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i d\u1ec5 b\u1ea3o tr\u00ec v\u00e0 r\u00f5 r\u00e0ng, h\u00e3y tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn sau.<\/p>\n<ul>\n<li><strong>Gi\u1eef c\u00e1c tr\u1ea1ng th\u00e1i nguy\u00ean t\u1eed:<\/strong> M\u1ed7i tr\u1ea1ng th\u00e1i n\u00ean \u0111\u1ea1i di\u1ec7n cho m\u1ed9t h\u00e0nh vi duy nh\u1ea5t v\u00e0 nh\u1ea5t qu\u00e1n. Tr\u00e1nh c\u00e1c tr\u1ea1ng th\u00e1i k\u1ebft h\u1ee3p c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u00f4ng li\u00ean quan.<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ea5p:<\/strong> N\u1ebfu m\u1ed9t nh\u00f3m tr\u1ea1ng th\u00e1i chia s\u1ebb c\u00e1c chuy\u1ec3n ti\u1ebfp chung, h\u00e3y nh\u00f3m ch\u00fang l\u1ea1i th\u00e0nh m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p \u0111\u1ec3 gi\u1ea3m s\u1ef1 l\u1ed9n x\u1ed9n v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c.<\/li>\n<li><strong>G\u1eafn nh\u00e3n r\u00f5 r\u00e0ng:<\/strong> \u0110\u1eb7t t\u00ean cho c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp m\u1ed9t c\u00e1ch m\u00f4 t\u1ea3. Tr\u00e1nh d\u00f9ng c\u00e1c vi\u1ebft t\u1eaft c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn cho nh\u1eefng ng\u01b0\u1eddi b\u1ea3o tr\u00ec sau n\u00e0y.<\/li>\n<li><strong>T\u00e0i li\u1ec7u v\u1ec1 c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong> Ghi r\u00f5 logic \u0111\u1eb1ng sau c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7. M\u1ed9t chuy\u1ec3n ti\u1ebfp kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 kh\u00f4ng \u0111i\u1ec1u ki\u1ec7n, \u0111i\u1ec1u n\u00e0y r\u1ea5t hi\u1ebfm.<\/li>\n<li><strong>Xem x\u00e9t th\u01b0\u1eddng xuy\u00ean:<\/strong> Khi y\u00eau c\u1ea7u thay \u0111\u1ed5i, m\u00e1y tr\u1ea1ng th\u00e1i ph\u1ea3i ti\u1ebfn h\u00f3a theo. Vi\u1ec7c xem x\u00e9t \u0111\u1ecbnh k\u1ef3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p v\u1edbi m\u00e3 th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<h2>C\u01a1 s\u1edf l\u00fd thuy\u1ebft \ud83d\udcd0<\/h2>\n<p>\u0110\u1ed1i v\u1edbi sinh vi\u00ean ng\u00e0nh khoa h\u1ecdc m\u00e1y t\u00ednh, vi\u1ec7c hi\u1ec3u r\u00f5 n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc l\u00e0 c\u00f3 l\u1ee3i. M\u1ed9t m\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t b\u1ed9 n\u0103m (Q, \u03a3, \u03b4, q0, F), trong \u0111\u00f3:<\/p>\n<ul>\n<li><strong>Q:<\/strong> M\u1ed9t t\u1eadp h\u1ee3p h\u1eefu h\u1ea1n c\u00e1c tr\u1ea1ng th\u00e1i.<\/li>\n<li><strong>\u03a3:<\/strong> M\u1ed9t t\u1eadp h\u1ee3p h\u1eefu h\u1ea1n c\u00e1c k\u00fd hi\u1ec7u \u0111\u1ea7u v\u00e0o (ng\u00f4n ng\u1eef).<\/li>\n<li><strong>\u03b4:<\/strong> H\u00e0m chuy\u1ec3n ti\u1ebfp (Q \u00d7 \u03a3 \u2192 Q).<\/li>\n<li><strong>q0:<\/strong> Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u.<\/li>\n<li><strong>F:<\/strong> T\u1eadp h\u1ee3p c\u00e1c tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac.<\/li>\n<\/ul>\n<p>C\u00e1ch th\u1ee9c h\u00ecnh th\u1ee9c n\u00e0y cho ph\u00e9p ki\u1ec3m ch\u1ee9ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng \u0111\u1ea1t t\u1edbi (m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ea1t t\u1edbi kh\u00f4ng?) v\u00e0 t\u00ednh an to\u00e0n (m\u1ed9t tr\u1ea1ng th\u00e1i kh\u00f4ng h\u1ee3p l\u1ec7 c\u00f3 bao gi\u1edd \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0o kh\u00f4ng?).<\/p>\n<h2>Ph\u00e2n bi\u1ec7t s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 \ud83d\udd04<\/h2>\n<p>R\u1ea5t ph\u1ed5 bi\u1ebfn khi nh\u1ea7m l\u1eabn s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u s\u1eed d\u1ee5ng m\u0169i t\u00ean, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau.<\/p>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i<\/th>\n<th>S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Tr\u1ecdng t\u00e2m<\/strong><\/td>\n<td>T\u1eadp trung v\u00e0o tr\u1ea1ng th\u00e1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng.<\/td>\n<td>T\u1eadp trung v\u00e0o lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n.<\/td>\n<\/tr>\n<tr>\n<td><strong>V\u00f2ng l\u1eb7p<\/strong><\/td>\n<td>C\u00e1c tr\u1ea1ng th\u00e1i t\u1ed3n t\u1ea1i theo th\u1eddi gian.<\/td>\n<td>C\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd theo th\u1ee9 t\u1ef1 tu\u1ea7n t\u1ef1.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed3ng th\u1eddi<\/strong><\/td>\n<td>C\u00f3 th\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c tr\u1ea1ng th\u00e1i \u0111\u1ed3ng th\u1eddi (c\u00e1c v\u00f9ng vu\u00f4ng g\u00f3c).<\/td>\n<td>Th\u01b0\u1eddng theo th\u1ee9 t\u1ef1 tu\u1ea7n t\u1ef1.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi \u0111\u1ea7u v\u00e0o<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n b\u00ean ngo\u00e0i.<\/td>\n<td>\u0110\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c \u0111i\u1ec1u ki\u1ec7n logic.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>K\u1ebft lu\u1eadn \ud83c\udfc1<\/h2>\n<p>S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i cung c\u1ea5p m\u1ed9t c\u00e1ch c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 suy ngh\u0129 v\u1ec1 h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch chia nh\u1ecf logic ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i r\u1eddi r\u1ea1c v\u00e0 c\u00e1c chuy\u1ec3n ti\u1ebfp, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng ph\u1ea7n m\u1ec1m \u0111\u00e1ng tin c\u1eady v\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c h\u01a1n. D\u00f9 b\u1ea1n l\u00e0 sinh vi\u00ean \u0111ang h\u1ecdc nh\u1eefng ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng hay l\u00e0 chuy\u00ean gia thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, vi\u1ec7c th\u00e0nh th\u1ea1o k\u00fd hi\u1ec7u n\u00e0y l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng qu\u00fd gi\u00e1. H\u00e3y nh\u1edb gi\u1eef cho m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n \u0111\u01a1n gi\u1ea3n, ghi ch\u00fa logic c\u1ee7a b\u1ea1n, v\u00e0 lu\u00f4n ki\u1ec3m th\u1eed c\u00e1c chuy\u1ec3n ti\u1ebfp tr\u1ea1ng th\u00e1i c\u1ee7a b\u1ea1n v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf.<\/p>\n<p>Khi b\u1ea1n ti\u1ebfp t\u1ee5c qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp, h\u00e3y luy\u1ec7n t\u1eadp v\u1ebd s\u01a1 \u0111\u1ed3 cho nhi\u1ec1u h\u1ec7 th\u1ed1ng kh\u00e1c nhau. C\u00e0ng m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec1u, c\u00e1c m\u1eabu h\u00ecnh s\u1ebd tr\u1edf n\u00ean tr\u1ef1c quan h\u01a1n. Ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 b\u1ea1n r\u1ea5t t\u1ed1t trong thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac, g\u1ee1 l\u1ed7i v\u00e0 t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong l\u0129nh v\u1ef1c khoa h\u1ecdc m\u00e1y t\u00ednh, m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c vi\u1ebft m\u00e3 ngu\u1ed3n. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5&hellip;<\/p>\n","protected":false},"author":1,"featured_media":756,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn v\u1ec1 S\u01a1 \u0111\u1ed3 Tr\u1ea1ng th\u00e1i v\u00e0 M\u00e1y Tr\u1ea1ng th\u00e1i cho Khoa h\u1ecdc M\u00e1y t\u00ednh \ud83c\udf93","_yoast_wpseo_metadesc":"H\u1ecdc v\u1ec1 s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i, FSM v\u00e0 b\u1ea3ng chuy\u1ec3n ti\u1ebfp. 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