{"id":11199,"date":"2026-04-10T03:32:01","date_gmt":"2026-04-09T19:32:01","guid":{"rendered":"https:\/\/www.archimetric.com\/vn\/state-machine-diagram-deep-dive-transitions-guards-embedded\/"},"modified":"2026-04-10T03:32:01","modified_gmt":"2026-04-09T19:32:01","slug":"state-machine-diagram-deep-dive-transitions-guards-embedded","status":"publish","type":"post","link":"https:\/\/www.archimetric.com\/vn\/state-machine-diagram-deep-dive-transitions-guards-embedded\/","title":{"rendered":"Kh\u00e1m ph\u00e1 s\u00e2u v\u1ec1 S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i: Gi\u1ea3i m\u00e3 c\u00e1c chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 cho c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang"},"content":{"rendered":"

C\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n r\u1eddi r\u1ea1c v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c li\u00ean t\u1ee5c. Kh\u00e1c v\u1edbi t\u00ednh to\u00e1n th\u00f4ng th\u01b0\u1eddng, n\u01a1i ngu\u1ed3n l\u1ef1c th\u01b0\u1eddng d\u1ed3i d\u00e0o, c\u00e1c \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean vi \u0111i\u1ec1u khi\u1ec3n ph\u1ea3i qu\u1ea3n l\u00fd b\u1ed9 nh\u1edb, s\u1ee9c m\u1ea1nh x\u1eed l\u00fd v\u00e0 th\u1eddi gian v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. \u1ede trung t\u00e2m c\u1ee7a ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m nh\u00fang \u0111\u00e1ng tin c\u1eady l\u00e0 S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i (SMD). Ph\u01b0\u01a1ng ph\u00e1p m\u00f4 h\u00ecnh h\u00f3a n\u00e0y cung c\u1ea5p m\u1ed9t khung h\u00ecnh \u1ea3nh v\u00e0 logic \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00e0nh vi h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i \u0111\u1ea7u v\u00e0o \u0111\u1ec1u d\u1eabn \u0111\u1ebfn \u0111\u1ea7u ra c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/p>\n

Trong b\u1ed1i c\u1ea3nh Ng\u00f4n ng\u1eef M\u00f4 h\u00ecnh h\u00f3a \u0110\u01a1n nh\u1ea5t (UML), S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 lu\u1ed3ng. N\u00f3 l\u00e0 m\u1ed9t b\u1ea3n m\u00f4 t\u1ea3 nghi\u00eam ng\u1eb7t v\u1ec1 h\u00e0nh vi \u0111\u1ed9ng. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m c\u00e0i \u0111\u1eb7t cho c\u00e1c thi\u1ebft b\u1ecb quan tr\u1ecdng v\u1ec1 an to\u00e0n, \u0111\u01a1n v\u1ecb \u0111i\u1ec1u khi\u1ec3n \u00f4 t\u00f4 ho\u1eb7c c\u1ea3m bi\u1ebfn IoT, vi\u1ec7c hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c\u2014\u0111\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng cho s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i m\u00e3 c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt v\u1ec1 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i, t\u1eadp trung v\u00e0o c\u00fa ph\u00e1p, logic v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c tri\u1ec3n khai c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng nh\u00fang m\u1ea1nh m\u1ebd.<\/p>\n

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\"Hand-drawn<\/figure>\n<\/div>\n

Hi\u1ec3u r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a M\u00e1y tr\u1ea1ng th\u00e1i \ud83e\udde9<\/h2>\n

Tr\u01b0\u1edbc khi ph\u00e2n t\u00edch c\u00e1c chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7, ta c\u1ea7n n\u1eafm v\u1eefng ch\u1eafc c\u00e1c \u0111\u01a1n v\u1ecb nguy\u00ean t\u1eed c\u1ea5u th\u00e0nh s\u01a1 \u0111\u1ed3. M\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng to\u00e1n h\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft k\u1ebf ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y t\u00ednh v\u00e0 m\u1ea1ch logic s\u1ed1. Trong UML, n\u00f3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng h\u00ecnh \u1ea3nh \u0111\u1ec3 l\u00e0m r\u00f5 logic ph\u1ee9c t\u1ea1p, v\u1ed1n c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh m\u00e3 h\u1ed7n \u0111\u1ed9n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c minh h\u1ecda r\u00f5 r\u00e0ng.<\/p>\n

    \n
  • Tr\u1ea1ng th\u00e1i:<\/strong> Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111i\u1ec1u ki\u1ec7n trong \u0111\u00f3 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c h\u1ec7 th\u1ed1ng th\u1ecfa m\u00e3n m\u1ed9t \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, th\u1ef1c hi\u1ec7n m\u1ed9t ho\u1ea1t \u0111\u1ed9ng n\u00e0o \u0111\u00f3, ho\u1eb7c ch\u1edd \u0111\u1ee3i m\u1ed9t s\u1ef1 ki\u1ec7n. M\u1ed9t tr\u1ea1ng th\u00e1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t bi\u1ebfn; n\u00f3 l\u00e0 b\u1ed1i c\u1ea3nh cho h\u00e0nh vi.<\/li>\n
  • Tr\u1ea1ng th\u00e1i gi\u1ea3 kh\u1edfi \u0111\u1ea7u:<\/strong> \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n t\u00f4 \u0111\u1ea7y, \u0111\u00e2y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u c\u1ee7a m\u00e1y. M\u1ed7i s\u01a1 \u0111\u1ed3 ch\u1ec9 c\u00f3 \u0111\u00fang m\u1ed9t tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ea7u.<\/li>\n
  • Tr\u1ea1ng th\u00e1i gi\u1ea3 k\u1ebft th\u00fac:<\/strong> \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n t\u00f4 \u0111\u1ea7y n\u1eb1m trong m\u1ed9t h\u00ecnh tr\u00f2n l\u1edbn h\u01a1n, cho th\u1ea5y s\u1ef1 k\u1ebft th\u00fac c\u1ee7a v\u00f2ng \u0111\u1eddi m\u00e1y.<\/li>\n
  • Chuy\u1ec3n ti\u1ebfp:<\/strong> Nh\u1eefng \u0111\u01b0\u1eddng c\u00f3 h\u01b0\u1edbng n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i v\u1edbi nhau. Ch\u00fang x\u00e1c \u0111\u1ecbnh s\u1ef1 di chuy\u1ec3n t\u1eeb m\u1ed9t \u0111i\u1ec1u ki\u1ec7n n\u00e0y sang \u0111i\u1ec1u ki\u1ec7n kh\u00e1c d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed c\u1ee5 th\u1ec3.<\/li>\n
  • S\u1ef1 ki\u1ec7n:<\/strong> C\u00e1c t\u00edn hi\u1ec7u ho\u1eb7c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t m\u1ed9t chuy\u1ec3n ti\u1ebfp. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 t\u00edn hi\u1ec7u n\u1ed9i b\u1ed9, ng\u1eaft b\u00ean ngo\u00e0i ho\u1eb7c th\u1eddi gian h\u1eb9n gi\u1edd h\u1ebft h\u1ea1n.<\/li>\n<\/ul>\n

    H\u00e3y xem x\u00e9t m\u1ed9t thi\u1ebft b\u1ecb nh\u00fang \u0111\u01a1n gi\u1ea3n, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t m\u00e1y \u0111i\u1ec1u nhi\u1ec7t th\u00f4ng minh. N\u00f3 c\u00f3 th\u1ec3 \u1edf tr\u1ea1ng th\u00e1i Ch\u1edd \u0111\u1ee3i<\/em> tr\u1ea1ng th\u00e1i, m\u1ed9t tr\u1ea1ng th\u00e1i \u0110un n\u00f3ng<\/em> tr\u1ea1ng th\u00e1i, ho\u1eb7c m\u1ed9t tr\u1ea1ng th\u00e1i L\u00e0m m\u00e1t<\/em> tr\u1ea1ng th\u00e1i. S\u1ef1 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i n\u00e0y \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c ph\u00e9p \u0111o nhi\u1ec7t \u0111\u1ed9 (s\u1ef1 ki\u1ec7n) v\u00e0 ng\u01b0\u1ee1ng an to\u00e0n (\u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7). Kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng r\u00f5 r\u00e0ng, logic chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u0111un n\u00f3ng v\u00e0 l\u00e0m m\u00e1t c\u00f3 th\u1ec3 d\u1ec5 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng c\u1ea1nh tranh ho\u1eb7c dao \u0111\u1ed9ng.<\/p>\n

    Kh\u00e1m ph\u00e1 s\u00e2u: Chuy\u1ec3n ti\u1ebfp v\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t c\u1ee7a ch\u00fang \ud83d\udd04<\/h2>\n

    C\u00e1c chuy\u1ec3n ti\u1ebfp l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n ho\u1ea1t \u0111\u1ed9ng ch\u00ednh c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho s\u1ef1 di chuy\u1ec3n \u0111i\u1ec1u khi\u1ec3n t\u1eeb m\u1ed9t tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c. Trong c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang, th\u1eddi gian v\u00e0 t\u00ednh x\u00e1c \u0111\u1ecbnh c\u1ee7a c\u00e1c chuy\u1ec3n ti\u1ebfp n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. M\u1ed9t chuy\u1ec3n ti\u1ebfp ph\u1ea3i r\u00f5 r\u00e0ng; h\u1ec7 th\u1ed1ng kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c r\u01a1i v\u00e0o t\u00ecnh hu\u1ed1ng m\u00e0 hai chuy\u1ec3n ti\u1ebfp \u0111\u1ec1u h\u1ee3p l\u1ec7 nh\u01b0 nhau n\u1ebfu kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf \u01b0u ti\u00ean \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/p>\n

    C\u00fa ph\u00e1p c\u1ee7a m\u1ed9t chuy\u1ec3n ti\u1ebfp<\/h3>\n

    C\u00e1ch k\u00fd hi\u1ec7u chuy\u1ec3n ti\u1ebfp ti\u00eau chu\u1ea9n th\u01b0\u1eddng tu\u00e2n theo c\u1ea5u tr\u00fac sau:<\/p>\n

    \nk\u00edch ho\u1ea1t<\/strong> [\u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7]<\/strong> \/h\u00e0nh \u0111\u1ed9ng<\/strong>\n<\/p><\/blockquote>\n

    M\u1ed7i th\u00e0nh ph\u1ea7n \u0111\u1ec1u c\u00f3 m\u1ed9t m\u1ee5c \u0111\u00edch ri\u00eang bi\u1ec7t trong lu\u1ed3ng th\u1ef1c thi:<\/p>\n

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    • K\u00edch ho\u1ea1t:<\/strong>S\u1ef1 ki\u1ec7n kh\u1edfi \u0111\u1ed9ng qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t l\u1eddi g\u1ecdi h\u00e0m, m\u1ed9t ng\u1eaft ph\u1ea7n c\u1ee9ng, ho\u1eb7c vi\u1ec7c ho\u00e0n t\u1ea5t m\u1ed9t h\u00e0nh \u0111\u1ed9ng n\u1ed9i b\u1ed9.<\/li>\n
    • \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong>M\u1ed9t \u0111i\u1ec1u ki\u1ec7n ki\u1ec3u boolean ph\u1ea3i c\u00f3 gi\u00e1 tr\u1ecb \u0111\u00fang \u0111\u1ec3 qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp x\u1ea3y ra. N\u1ebfu \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 sai, qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp s\u1ebd b\u1ecb b\u1ecf qua v\u00e0 h\u1ec7 th\u1ed1ng v\u1eabn gi\u1eef nguy\u00ean tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i.<\/li>\n
    • H\u00e0nh \u0111\u1ed9ng:<\/strong>M\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c thi khi qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp ho\u00e0n t\u1ea5t. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 c\u1eadp nh\u1eadt c\u00e1c bi\u1ebfn ho\u1eb7c thi\u1ebft l\u1eadp c\u1edd.<\/li>\n<\/ul>\n

      V\u00ed d\u1ee5, trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1, m\u1ed9t qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp c\u00f3 th\u1ec3 tr\u00f4ng nh\u01b0 sau:<\/p>\n

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      • K\u00edch ho\u1ea1t:<\/strong> ph\u00e1t_hi\u1ec7n_d\u00f2ng_\u0111i\u1ec7n_qu\u00e1_t\u1ea3i<\/code><\/li>\n
      • \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong> t\u1ed1c_\u0111\u1ed9 > 1000 V\u00f2ng\/ph\u00fat<\/code><\/li>\n
      • H\u00e0nh \u0111\u1ed9ng:<\/strong> t\u1eaft_\u0111\u1ed9ng_c\u01a1(); thi\u1ebft_l\u1eadp_c\u1edd_s\u1ef1_c\u1ed1();<\/code><\/li>\n<\/ul>\n

        \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ed9ng c\u01a1 kh\u00f4ng b\u1ecb t\u1eaft do m\u1ed9t \u0111\u1ec9nh t\u1ee9c th\u1eddi, tr\u1eeb khi \u0111\u1ed9ng c\u01a1 \u0111ang quay v\u1edbi t\u1ed1c \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 \u0111\u1ec9nh \u0111\u00f3 cho th\u1ea5y m\u1ed9t s\u1ef1 c\u1ed1 c\u01a1 h\u1ecdc th\u1ef1c s\u1ef1.<\/p>\n

        C\u00e1c lo\u1ea1i chuy\u1ec3n ti\u1ebfp<\/h3>\n

        Kh\u00f4ng ph\u1ea3i m\u1ecdi chuy\u1ec3n ti\u1ebfp n\u00e0o c\u0169ng gi\u1ed1ng nhau. C\u00e1c k\u1ef9 s\u01b0 nh\u00fang ph\u1ea3i ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c chuy\u1ec3n ti\u1ebfp b\u00ean ngo\u00e0i v\u00e0 b\u00ean trong \u0111\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n

          \n
        • Chuy\u1ec3n ti\u1ebfp b\u00ean ngo\u00e0i:<\/strong> Ch\u00fang di chuy\u1ec3n h\u1ec7 th\u1ed1ng t\u1eeb m\u1ed9t tr\u1ea1ng th\u00e1i sang m\u1ed9t tr\u1ea1ng th\u00e1i kh\u00e1c. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c nh\u1eadp v\u00e0o ng\u1eef c\u1ea3nh tr\u1ea1ng th\u00e1i m\u1edbi, th\u1ef1c thi c\u00e1c h\u00e0nh \u0111\u1ed9ng v\u00e0o tr\u1ea1ng th\u00e1i, v\u00e0 c\u00f3 th\u1ec3 tho\u00e1t kh\u1ecfi tr\u1ea1ng th\u00e1i c\u0169.<\/li>\n
        • Chuy\u1ec3n ti\u1ebfp n\u1ed9i b\u1ed9:<\/strong> Ch\u00fang x\u1ea3y ra m\u00e0 kh\u00f4ng r\u1eddi kh\u1ecfi tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i. H\u1ec7 th\u1ed1ng x\u1eed l\u00fd m\u1ed9t s\u1ef1 ki\u1ec7n, th\u1ef1c hi\u1ec7n m\u1ed9t h\u00e0nh \u0111\u1ed9ng v\u00e0 v\u1eabn gi\u1eef nguy\u00ean tr\u1ea1ng th\u00e1i \u0111\u00f3. \u0110i\u1ec1u n\u00e0y r\u1ea5t hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang v\u00ec n\u00f3 tr\u00e1nh \u0111\u01b0\u1ee3c chi ph\u00ed ph\u00e1t sinh t\u1eeb c\u00e1c th\u1ee7 t\u1ee5c v\u00e0o\/ra tr\u1ea1ng th\u00e1i.<\/li>\n<\/ul>\n

          C\u00e1c chuy\u1ec3n ti\u1ebfp n\u1ed9i b\u1ed9 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch \u0111\u1ec3 x\u1eed l\u00fd ghi nh\u1eadt k\u00fd l\u1ed7i ho\u1eb7c c\u1eadp nh\u1eadt c\u00e1c ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n

          \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7: Logic v\u00e0 t\u00ednh x\u00e1c \u0111\u1ecbnh \ud83d\uded1<\/h2>\n

          C\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 logic ra quy\u1ebft \u0111\u1ecbnh b\u00ean trong m\u00e1y tr\u1ea1ng th\u00e1i. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00e1c b\u1ed9 l\u1ecdc x\u00e1c \u0111\u1ecbnh xem m\u1ed9t chuy\u1ec3n ti\u1ebfp c\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p hay kh\u00f4ng. Trong b\u1ed1i c\u1ea3nh h\u1ec7 th\u1ed1ng nh\u00fang, c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 ph\u1ea3i x\u00e1c \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3. Logic ph\u1ee9c t\u1ea1p b\u00ean trong m\u1ed9t \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ed9 tr\u1ec5 th\u1eddi gian, \u0111i\u1ec1u n\u00e0y kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c trong c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c.<\/p>\n

          C\u01a1 ch\u1ebf \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/h3>\n

          Khi m\u1ed9t s\u1ef1 ki\u1ec7n x\u1ea3y ra, m\u00e1y tr\u1ea1ng th\u00e1i s\u1ebd \u0111\u00e1nh gi\u00e1 t\u1ea5t c\u1ea3 c\u00e1c chuy\u1ec3n ti\u1ebfp ra kh\u1ecfi tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i. Quy tr\u00ecnh \u0111\u00e1nh gi\u00e1 th\u01b0\u1eddng tu\u00e2n theo th\u1ee9 t\u1ef1 sau:<\/p>\n

            \n
          1. Ph\u00f9 h\u1ee3p s\u1ef1 ki\u1ec7n:<\/strong>X\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi s\u1ef1 ki\u1ec7n.<\/li>\n
          2. \u0110\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong>\u0110\u1ed1i v\u1edbi m\u1ed7i chuy\u1ec3n ti\u1ebfp ph\u00f9 h\u1ee3p, h\u00e3y \u0111\u00e1nh gi\u00e1 bi\u1ec3u th\u1ee9c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7.<\/li>\n
          3. Gi\u1ea3i quy\u1ebft \u01b0u ti\u00ean:<\/strong> N\u1ebfu nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra \u0111\u1ec1u \u0111\u00e1nh gi\u00e1 l\u00e0 \u0111\u00fang, th\u00ec chuy\u1ec3n ti\u1ebfp c\u00f3 \u0111\u1ed9 \u01b0u ti\u00ean cao nh\u1ea5t s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. \u0110\u1ed9 \u01b0u ti\u00ean th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi th\u1ee9 t\u1ef1 \u0111\u1ecbnh ngh\u0129a ho\u1eb7c c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p r\u00f5 r\u00e0ng trong m\u00f4 h\u00ecnh.<\/li>\n
          4. Th\u1ef1c thi:<\/strong>Th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i v\u00e0o tr\u1ea1ng th\u00e1i \u0111\u00edch.<\/li>\n<\/ol>\n

            R\u1ea5t quan tr\u1ecdng r\u1eb1ng c\u00e1c bi\u1ec3u th\u1ee9c \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ee9a hi\u1ec7u \u1ee9ng ph\u1ee5. M\u1ed9t \u0111i\u1ec1u ki\u1ec7n ch\u1ec9 n\u00ean ki\u1ec3m tra tr\u1ea1ng th\u00e1i c\u1ee7a bi\u1ebfn, ch\u1ee9 kh\u00f4ng \u0111\u01b0\u1ee3c thay \u0111\u1ed5i ch\u00fang. Vi\u1ec7c thay \u0111\u1ed5i bi\u1ebfn b\u00ean trong m\u1ed9t \u0111i\u1ec1u ki\u1ec7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u00e0nh vi kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc, \u0111\u1eb7c bi\u1ec7t n\u1ebfu c\u00f9ng m\u1ed9t bi\u1ebfn b\u1ecb thay \u0111\u1ed5i b\u1edfi c\u00e1c ng\u1eaft \u0111\u1ed3ng th\u1eddi.<\/p>\n

            Th\u1eddi gian v\u00e0 \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra<\/h3>\n

            Trong m\u00f4i tr\u01b0\u1eddng nh\u00fang th\u1eddi gian th\u1ef1c, th\u1eddi gian l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. C\u00e1c \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra th\u01b0\u1eddng bao g\u1ed3m ki\u1ec3m tra th\u1eddi gian \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 dao \u0111\u1ed9ng tr\u1ea1ng th\u00e1i nhanh ch\u00f3ng. M\u1ed9t m\u1eabu ph\u1ed5 bi\u1ebfn l\u00e0 logic lo\u1ea1i b\u1ecf nhi\u1ec5u, n\u01a1i \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra \u0111\u1ea3m b\u1ea3o r\u1eb1ng chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i ch\u1ec9 x\u1ea3y ra n\u1ebfu \u0111i\u1ec1u ki\u1ec7n duy tr\u00ec trong m\u1ed9t kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh.<\/p>\n

              \n
            • V\u00ed d\u1ee5:<\/strong>M\u1ed9t l\u1ea7n nh\u1ea5n n\u00fat c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t m\u1ed9t chuy\u1ec3n ti\u1ebfp, nh\u01b0ng \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra ki\u1ec3m trath\u1eddi_gian_k\u1ec3_t\u1eeb_nh\u1ea5n > 100ms<\/code>.<\/li>\n
            • L\u1ee3i \u00edch:<\/strong>\u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba vi\u1ec7c b\u1eadt\/t\u1eaft v\u00f4 t\u00ecnh do hi\u1ec7n t\u01b0\u1ee3ng rung c\u01a1 h\u1ecdc.<\/li>\n<\/ul>\n

              T\u01b0\u01a1ng t\u1ef1, c\u00e1c b\u1ed9 \u0111\u1ebfm gi\u00e1m s\u00e1t th\u01b0\u1eddng d\u1ef1a v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c r\u1eddi kh\u1ecfi trong m\u1ed9t kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh, th\u00ec chuy\u1ec3n ti\u1ebfp s\u1ebd b\u1ecb bu\u1ed9c \u0111i \u0111\u1ebfn tr\u1ea1ng th\u00e1i an to\u00e0n. \u0110\u00e2y l\u00e0 m\u1ed9t t\u00ednh n\u0103ng an to\u00e0n then ch\u1ed1t trong c\u00e1c thi\u1ebft b\u1ecb \u00f4 t\u00f4 v\u00e0 y t\u1ebf.<\/p>\n

              So s\u00e1nh c\u00e1c chi\u1ebfn l\u01b0\u1ee3c chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra<\/h3>\n\n\n\n\n\n\n\n\n
              Chi\u1ebfn l\u01b0\u1ee3c<\/th>\n\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/th>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t<\/th>\nTr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
              \u0110i\u1ec1u ki\u1ec7n ki\u1ec3m tra logic \u0111\u01a1n gi\u1ea3n<\/td>\nTh\u1ea5p<\/td>\nKh\u00f4ng \u0111\u00e1ng k\u1ec3<\/td>\nC\u1edd nh\u1ecb ph\u00e2n, c\u00f4ng t\u1eafc b\u1eadt\/t\u1eaft<\/td>\n<\/tr>\n
              \u0110i\u1ec1u ki\u1ec7n ki\u1ec3m tra kho\u1ea3ng gi\u00e1 tr\u1ecb<\/td>\nTrung b\u00ecnh<\/td>\nTh\u1ea5p<\/td>\nGi\u00e1 tr\u1ecb \u0111\u1ecdc ADC, ng\u01b0\u1ee1ng c\u1ea3m bi\u1ebfn<\/td>\n<\/tr>\n
              \u0110i\u1ec1u ki\u1ec7n ki\u1ec3m tra l\u1ecbch s\u1eed tr\u1ea1ng th\u00e1i<\/td>\nCao<\/td>\nTrung b\u00ecnh<\/td>\nLogic ph\u1ee5c h\u1ed3i, ch\u1ebf \u0111\u1ed9 ph\u1ee5 thu\u1ed9c v\u00e0o l\u1ecbch s\u1eed<\/td>\n<\/tr>\n
              B\u1ea3o v\u1ec7 d\u1ef1a tr\u00ean b\u1ed9 \u0111\u1ebfm th\u1eddi gian<\/td>\nTrung b\u00ecnh<\/td>\nTh\u1ea5p<\/td>\nGi\u1ea3m nhi\u1ec5u, x\u1eed l\u00fd th\u1eddi gian ch\u1edd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              H\u00e0nh \u0111\u1ed9ng v\u00e0o, ra v\u00e0 th\u1ef1c hi\u1ec7n \ud83c\udfd7\ufe0f<\/h2>\n

              Trong khi c\u00e1c chuy\u1ec3n ti\u1ebfp di chuy\u1ec3n h\u1ec7 th\u1ed1ng, c\u00e1c h\u00e0nh \u0111\u1ed9ng v\u00e0o, ra v\u00e0 th\u1ef1c hi\u1ec7n x\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec x\u1ea3y ra b\u00ean trong c\u00e1c tr\u1ea1ng th\u00e1i. \u0110\u00e2y l\u00e0 nh\u1eefng \u0111i\u1ec3m n\u1ed1i cho ph\u00e9p m\u00e1y tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00f4i tr\u01b0\u1eddng ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m.<\/p>\n

              H\u00e0nh \u0111\u1ed9ng v\u00e0o<\/h3>\n

              C\u00e1c h\u00e0nh \u0111\u1ed9ng v\u00e0o \u0111\u01b0\u1ee3c th\u1ef1c thi m\u1ed7i khi tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c v\u00e0o. \u0110\u00e2y l\u00e0 n\u01a1i l\u00fd t\u01b0\u1edfng \u0111\u1ec3 kh\u1edfi t\u1ea1o c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi ph\u1ea7n c\u1ee9ng, \u0111\u1eb7t ch\u00e2n ra m\u1ee9c \u0111i\u1ec7n \u00e1p c\u1ee5 th\u1ec3, ho\u1eb7c ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean. V\u00ed d\u1ee5, khi v\u00e0o tr\u1ea1ng th\u00e1iWifi_Connecting<\/em>s\u1ebd k\u00edch ho\u1ea1t vi\u1ec7c kh\u1edfi t\u1ea1o b\u1ed9 ch\u1ed3ng m\u1ea1ng v\u00e0 ph\u1ea7n c\u1ee9ng radio.<\/p>\n

                \n
              • \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/strong>Th\u1ef1c thi m\u1ed9t l\u1ea7n cho m\u1ed7i chuy\u1ec3n ti\u1ebfp v\u00e0o tr\u1ea1ng th\u00e1i.<\/li>\n
              • L\u01b0u \u00fd khi nh\u00fang:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c h\u00e0nh \u0111\u1ed9ng v\u00e0o kh\u00f4ng ch\u1eb7n. C\u00e1c quy tr\u00ecnh kh\u1edfi t\u1ea1o d\u00e0i c\u00f3 th\u1ec3 ch\u1eb7n v\u00f2ng l\u1eb7p ch\u00ednh v\u00e0 g\u00e2y ra th\u1eddi gian ch\u1edd gi\u00e1m s\u00e1t v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n.<\/li>\n<\/ul>\n

                H\u00e0nh \u0111\u1ed9ng ra<\/h3>\n

                C\u00e1c h\u00e0nh \u0111\u1ed9ng ra \u0111\u01b0\u1ee3c th\u1ef1c thi tr\u01b0\u1edbc khi r\u1eddi kh\u1ecfi m\u1ed9t tr\u1ea1ng th\u00e1i. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c thao t\u00e1c d\u1ecdn d\u1eb9p. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i \u0111ang gi\u1eef t\u00e0i nguy\u00ean, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t tr\u00ecnh truy c\u1eadp t\u1ec7p ho\u1eb7c b\u1ed9 \u0111\u1ec7m b\u1ed9 nh\u1edb, h\u00e0nh \u0111\u1ed9ng ra ph\u1ea3i gi\u1ea3i ph\u00f3ng n\u00f3 \u0111\u1ec3 tr\u00e1nh r\u00f2 r\u1ec9 b\u1ed9 nh\u1edb ho\u1eb7c xung \u0111\u1ed9t ph\u1ea7n c\u1ee9ng.<\/p>\n

                  \n
                • \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/strong>Th\u1ef1c thi ngay l\u1eadp t\u1ee9c tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp x\u1ea3y ra.<\/li>\n
                • L\u01b0u \u00fd khi nh\u00fang:<\/strong>C\u00e1c h\u00e0nh \u0111\u1ed9ng ra ph\u1ea3i nhanh. Vi\u1ec7c tr\u00ec ho\u00e3n vi\u1ec7c r\u1eddi tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 l\u00e0m c\u1ea1n ki\u1ec7t c\u00e1c ng\u1eaft \u0111ang ch\u1edd x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n ti\u1ebfp theo.<\/li>\n<\/ul>\n

                  H\u00e0nh \u0111\u1ed9ng th\u1ef1c hi\u1ec7n<\/h3>\n

                  C\u00e1c h\u00e0nh \u0111\u1ed9ng th\u1ef1c hi\u1ec7n \u0111\u1ea1i di\u1ec7n cho ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c c\u1ee7a m\u1ed9t tr\u1ea1ng th\u00e1i. Kh\u00e1c v\u1edbi v\u00e0o ho\u1eb7c ra, c\u00e1c h\u00e0nh \u0111\u1ed9ng th\u1ef1c hi\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi m\u1ed9t chuy\u1ec3n ti\u1ebfp m\u00e0 b\u1edfi s\u1ef1 tr\u00f4i qua c\u1ee7a th\u1eddi gian trong tr\u1ea1ng th\u00e1i. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ki\u1ec3m tra c\u1ea3m bi\u1ebfn ho\u1eb7c duy tr\u00ec t\u00edn hi\u1ec7u nh\u1ecbp tim.<\/p>\n

                    \n
                  • \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/strong>Th\u1ef1c thi \u0111\u1ecbnh k\u1ef3 trong khi tr\u1ea1ng th\u00e1i v\u1eabn ho\u1ea1t \u0111\u1ed9ng.<\/li>\n
                  • L\u01b0u \u00fd khi nh\u00fang:<\/strong>C\u00e1c h\u00e0nh \u0111\u1ed9ng th\u1ef1c hi\u1ec7n kh\u00f4ng n\u00ean chi\u1ebfm gi\u1eef c\u00e1c chu k\u1ef3 CPU. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai d\u01b0\u1edbi d\u1ea1ng h\u00e0m g\u1ecdi l\u1ea1i b\u1ed9 \u0111\u1ebfm th\u1eddi gian ho\u1eb7c trong v\u00f2ng l\u1eb7p ki\u1ec3m tra ch\u00ednh.<\/li>\n<\/ul>\n

                    Tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed: S\u00e2u vs. n\u00f4ng \ud83d\udd04<\/h2>\n

                    C\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang ph\u1ee9c t\u1ea1p th\u01b0\u1eddng quay l\u1ea1i c\u00e1c tr\u1ea1ng th\u00e1i sau khi \u0111i v\u00f2ng. C\u00e1c tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed cho ph\u00e9p m\u00e1y ghi nh\u1edb n\u01a1i n\u00f3 \u0111ang \u1edf tr\u01b0\u1edbc khi r\u1eddi kh\u1ecfi m\u1ed9t tr\u1ea1ng th\u00e1i h\u1ee3p th\u00e0nh. \u0110i\u1ec1u n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea7n kh\u00f4i ph\u1ee5c ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c t\u1ea1i \u0111i\u1ec3m \u0111\u00e3 d\u1eebng sau m\u1ed9t l\u1ea7n gi\u00e1n \u0111o\u1ea1n ng\u1eafn.<\/p>\n

                    L\u1ecbch s\u1eed n\u00f4ng<\/h3>\n

                    M\u1ed9t tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed n\u00f4ng ghi nh\u1edb tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ngtr\u1ea1ng th\u00e1i con<\/em> b\u00ean trong m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p, nh\u01b0ng kh\u00f4ng bao g\u1ed3m c\u00e1c tr\u1ea1ng th\u00e1i con ch\u00e1u. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p ch\u1ee9a nhi\u1ec1u tr\u1ea1ng th\u00e1i con, tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed n\u00f4ng s\u1ebd quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng.<\/p>\n

                    L\u1ecbch s\u1eed s\u00e2u<\/h3>\n

                    M\u1ed9t tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed s\u00e2u ghi nh\u1edb tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng, bao g\u1ed3m c\u1ea3 b\u1ea5t k\u1ef3 tr\u1ea1ng th\u00e1i con l\u1ed3ng gh\u00e9p n\u00e0o b\u00ean trong n\u00f3. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng c\u1ea7n thi\u1ebft cho c\u00e1c giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ph\u1ee9c t\u1ea1p ho\u1eb7c c\u00e1c tr\u1ea1ng th\u00e1i giao th\u1ee9c \u0111a l\u1edbp.<\/p>\n

                      \n
                    • Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong> M\u1ed9t menu c\u1ea5u h\u00ecnh n\u01a1i ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng s\u00e2u v\u00e0o c\u00e1c c\u00e0i \u0111\u1eb7t. N\u1ebfu thi\u1ebft b\u1ecb kh\u1edfi \u0111\u1ed9ng l\u1ea1i, tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed s\u00e2u \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c quay tr\u1edf l\u1ea1i ch\u00ednh x\u00e1c m\u00e0n h\u00ecnh m\u00e0 h\u1ecd \u0111ang s\u1eed d\u1ee5ng, thay v\u00ec menu c\u1ea5p cao nh\u1ea5t.<\/li>\n<\/ul>\n

                      H\u1ea1n ch\u1ebf h\u1ec7 th\u1ed1ng nh\u00fang v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u2699\ufe0f<\/h2>\n

                      Thi\u1ebft k\u1ebf m\u00e1y tr\u1ea1ng th\u00e1i cho c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang \u0111\u00f2i h\u1ecfi s\u1ef1 thay \u0111\u1ed5i trong t\u01b0 duy so v\u1edbi ph\u1ea7n m\u1ec1m th\u00f4ng th\u01b0\u1eddng. Chi ph\u00ed b\u1ed9 nh\u1edb, \u0111\u1ed9 s\u00e2u ng\u0103n x\u1ebfp v\u00e0 th\u1eddi gian th\u1ef1c thi l\u00e0 nh\u1eefng t\u00e0i nguy\u00ean h\u1eefu h\u1ea1n, quy\u1ebft \u0111\u1ecbnh c\u00e1c l\u1ef1a ch\u1ecdn thi\u1ebft k\u1ebf.<\/p>\n

                      Hi\u1ec7u qu\u1ea3 b\u1ed9 nh\u1edb<\/h3>\n

                      C\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai trong ph\u1ea7n m\u1ec1m b\u1eb1ng c\u00e1c c\u1ea5u tr\u00fac d\u1eef li\u1ec7u (nh\u01b0 m\u1ea3ng ho\u1eb7c struct) ho\u1eb7c \u0111\u01b0\u1ee3c sinh tr\u1ef1c ti\u1ebfp th\u00e0nh m\u00e3 C. Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng h\u1ea1n ch\u1ebf b\u1ed9 nh\u1edb, ph\u01b0\u01a1ng ph\u00e1p d\u1ef1a tr\u00ean d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c \u0111\u1ecbnh ngh\u0129a m\u1ed9t b\u1ea3ng chuy\u1ec3n ti\u1ebfp, trong \u0111\u00f3 m\u1ed7i h\u00e0ng ch\u1ee9a tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i, s\u1ef1 ki\u1ec7n, tr\u1ea1ng th\u00e1i ti\u1ebfp theo v\u00e0 con tr\u1ecf h\u00e0nh \u0111\u1ed9ng.<\/p>\n

                        \n
                      • \u01afu \u0111i\u1ec3m:<\/strong>Gi\u1ea3m k\u00edch th\u01b0\u1edbc m\u00e3 ngu\u1ed3n; thay \u0111\u1ed5i logic ch\u1ec9 c\u1ea7n c\u1eadp nh\u1eadt b\u1ea3ng, kh\u00f4ng c\u1ea7n bi\u00ean d\u1ecbch l\u1ea1i m\u00e3 ngu\u1ed3n.<\/li>\n
                      • Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong>Chi ph\u00ed tra c\u1ee9u h\u01a1i cao h\u01a1n so v\u1edbi g\u1ecdi h\u00e0m tr\u1ef1c ti\u1ebfp.<\/li>\n<\/ul>\n

                        An to\u00e0n cho ng\u0103n x\u1ebfp v\u00e0 ng\u1eaft<\/h3>\n

                        C\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i th\u01b0\u1eddng ch\u1ea1y trong v\u00f2ng l\u1eb7p ch\u00ednh nh\u01b0ng ph\u1ea3i ph\u1ea3n h\u1ed3i c\u00e1c ng\u1eaft. N\u1ebfu m\u1ed9t ng\u1eaft k\u00edch ho\u1ea1t chuy\u1ec3n tr\u1ea1ng th\u00e1i, m\u00e1y ph\u1ea3i c\u00f3 th\u1ec3 t\u00e1i nh\u1eadp. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 bi\u1ebfn tr\u1ea1ng th\u00e1i ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt m\u1ed9t c\u00e1ch nguy\u00ean t\u1eed \u0111\u1ec3 ng\u0103n ng\u1eeba l\u1ed7i n\u1ebfu ng\u1eaft x\u1ea3y ra trong qu\u00e1 tr\u00ecnh chuy\u1ec3n tr\u1ea1ng th\u00e1i.<\/p>\n

                          \n
                        • Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/strong>S\u1eed d\u1ee5ng c\u00e1c thao t\u00e1c nguy\u00ean t\u1eed \u0111\u1ec3 c\u1eadp nh\u1eadt tr\u1ea1ng th\u00e1i ho\u1eb7c v\u00f4 hi\u1ec7u h\u00f3a ng\u1eaft trong c\u00e1c \u0111o\u1ea1n m\u00e3 quan tr\u1ecdng.<\/li>\n
                        • C\u1ea3nh b\u00e1o:<\/strong>Tr\u00e1nh l\u1ed3ng gh\u00e9p s\u00e2u c\u00e1c h\u00e0m b\u00ean trong c\u00e1c h\u00e0nh \u0111\u1ed9ng tr\u1ea1ng th\u00e1i \u0111\u1ec3 tr\u00e1nh tr\u00e0n ng\u0103n x\u1ebfp.<\/li>\n<\/ul>\n

                          T\u00ednh x\u00e1c \u0111\u1ecbnh trong th\u1eddi gian th\u1ef1c<\/h3>\n

                          Trong c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c c\u1ee9ng, th\u1eddi gian x\u1eed l\u00fd m\u1ed9t chuy\u1ec3n tr\u1ea1ng th\u00e1i ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n. Logic b\u1ea3o v\u1ec7 ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1eddi gian th\u1ef1c thi thay \u0111\u1ed5i. \u0110\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec1u n\u00e0y, c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 n\u00ean \u0111\u01b0\u1ee3c gi\u1eef \u0111\u01a1n gi\u1ea3n, v\u00e0 c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i quan tr\u1ecdng nh\u1ea5t n\u00ean \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong qu\u00e1 tr\u00ecnh sinh m\u00e3.<\/p>\n

                          Chi\u1ebfn l\u01b0\u1ee3c g\u1ee1 l\u1ed7i v\u00e0 x\u00e1c th\u1ef1c \ud83e\uddea<\/h2>\n

                          Vi\u1ec7c x\u00e1c minh t\u00ednh \u0111\u00fang \u0111\u1eafn c\u1ee7a m\u1ed9t m\u00e1y tr\u1ea1ng th\u00e1i th\u01b0\u1eddng kh\u00f3 h\u01a1n vi\u1ec7c x\u00e1c minh m\u00e3 th\u1ee7 t\u1ee5c th\u00f4ng th\u01b0\u1eddng. S\u1ef1 b\u00f9ng n\u1ed5 t\u1ed5 h\u1ee3p c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp khi\u1ebfn vi\u1ec7c ki\u1ec3m th\u1eed to\u00e0n di\u1ec7n tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/p>\n

                          X\u00e1c th\u1ef1c m\u00f4 h\u00ecnh<\/h3>\n

                          Tr\u01b0\u1edbc khi sinh m\u00e3, ch\u00ednh m\u00f4 h\u00ecnh ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c. C\u00e1c c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c, c\u00e1c chuy\u1ec3n ti\u1ebfp b\u1ecb thi\u1ebfu cho c\u00e1c s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3, ho\u1eb7c c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng tr\u00f2n c\u00f3 th\u1ec3 g\u00e2y ra v\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n.<\/p>\n

                          Thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng<\/h3>\n

                          C\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i nh\u00fang \u0111\u00f2i h\u1ecfi t\u00ednh minh b\u1ea1ch. Vi\u1ec7c th\u00eam c\u00e1c \u0111i\u1ec3m n\u1ed1i ghi nh\u1eadt k\u00fd \u0111\u1ec3 ghi l\u1ea1i vi\u1ec7c v\u00e0o, ra tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t chuy\u1ec3n ti\u1ebfp l\u00e0 c\u00e1ch l\u00e0m chu\u1ea9n. Tuy nhi\u00ean, vi\u1ec7c ghi nh\u1eadt k\u00fd ph\u1ea3i nh\u1eb9 \u0111\u1ec3 tr\u00e1nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian th\u1ef1c.<\/p>\n

                            \n
                          • K\u1ef9 thu\u1eadt:<\/strong>S\u1eed d\u1ee5ng b\u1ed9 \u0111\u1ec7m v\u00f2ng trong b\u1ed9 nh\u1edb \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c s\u1ef1 ki\u1ec7n tr\u1ea1ng th\u00e1i g\u1ea7n \u0111\u00e2y.<\/li>\n
                          • Truy c\u1eadp:<\/strong>L\u1ea5y d\u1eef li\u1ec7u b\u1ed9 \u0111\u1ec7m th\u00f4ng qua giao di\u1ec7n g\u1ee1 l\u1ed7i ho\u1eb7c UART khi x\u1ea3y ra l\u1ed7i.<\/li>\n<\/ul>\n

                            T\u1ea1o tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed<\/h3>\n

                            T\u1ef1 \u0111\u1ed9ng t\u1ea1o tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed c\u00f3 th\u1ec3 duy\u1ec7t qua \u0111\u1ed3 th\u1ecb tr\u1ea1ng th\u00e1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed7i chuy\u1ec3n ti\u1ebfp \u0111\u01b0\u1ee3c th\u1ef1c thi \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c ti\u00eau chu\u1ea9n quan tr\u1ecdng v\u1ec1 an to\u00e0n, n\u01a1i y\u00eau c\u1ea7u ph\u1ee7 s\u00f3ng chuy\u1ec3n ti\u1ebfp 100% th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng.<\/p>\n

                            Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 m\u1eabu ch\u1ed1ng l\u1ea1i t\u1ed1t \ud83d\udeab<\/h2>\n

                            Ngay c\u1ea3 nh\u1eefng k\u1ef9 s\u01b0 c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 m\u1eafc b\u1eaby khi thi\u1ebft k\u1ebf m\u00e1y tr\u1ea1ng th\u00e1i. Nh\u1eadn di\u1ec7n nh\u1eefng m\u1eabu n\u00e0y s\u1edbm c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m th\u1eddi gian g\u1ee1 l\u1ed7i \u0111\u00e1ng k\u1ec3 sau n\u00e0y.<\/p>\n

                              \n
                            • Tr\u1ea1ng th\u00e1i h\u1ed7n \u0111\u1ed9n:<\/strong>C\u00f3 qu\u00e1 nhi\u1ec1u chuy\u1ec3n ti\u1ebfp gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p r\u00f5 r\u00e0ng. \u0110i\u1ec1u n\u00e0y khi\u1ebfn h\u1ec7 th\u1ed1ng kh\u00f3 b\u1ea3o tr\u00ec. S\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ea5p \u0111\u1ec3 nh\u00f3m c\u00e1c h\u00e0nh vi li\u00ean quan.<\/li>\n
                            • Li\u00ean k\u1ebft tr\u1ea1ng th\u00e1i to\u00e0n c\u1ee5c:<\/strong>D\u1ef1a v\u00e0o bi\u1ebfn to\u00e0n c\u1ee5c \u0111\u1ec3 x\u1eed l\u00fd logic tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 khi\u1ebfn h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean mong manh. \u0110\u00f3ng g\u00f3i d\u1eef li\u1ec7u tr\u1ea1ng th\u00e1i b\u00ean trong c\u1ea5u tr\u00fac m\u00e1y tr\u1ea1ng th\u00e1i.<\/li>\n
                            • Thi\u1ebfu chuy\u1ec3n ti\u1ebfp m\u1eb7c \u0111\u1ecbnh:<\/strong>N\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a cho m\u1ed9t tr\u1ea1ng th\u00e1i, h\u1ec7 th\u1ed1ng c\u1ea7n c\u00f3 tr\u1ea1ng th\u00e1i d\u1ef1 ph\u00f2ng ho\u1eb7c tr\u1ea1ng th\u00e1i l\u1ed7i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5. B\u1ecf qua c\u00e1c s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u00e0nh vi kh\u00f4ng x\u00e1c \u0111\u1ecbnh.<\/li>\n
                            • H\u00e0nh \u0111\u1ed9ng ch\u1eb7n:<\/strong>\u0110\u1eb7t c\u00e1c thao t\u00e1c d\u00e0isleep()<\/code> ho\u1eb7c wait()<\/code>g\u1ecdi b\u00ean trong c\u00e1c h\u00e0nh \u0111\u1ed9ng Entry. Nh\u1eefng thao t\u00e1c n\u00e0y n\u00ean \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi b\u1ed9 \u0111\u1ebfm th\u1eddi gian \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e1y tr\u1ea1ng th\u00e1i v\u1eabn duy tr\u00ec kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i.<\/li>\n<\/ul>\n

                              X\u00e9t \u0111\u1ebfn an to\u00e0n v\u00e0 \u0111\u1ed9 tin c\u1eady \ud83d\udee1\ufe0f<\/h2>\n

                              Trong c\u00e1c ng\u00e0nh nh\u01b0 \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf, m\u00e1y tr\u1ea1ng th\u00e1i th\u01b0\u1eddng l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng quan tr\u1ecdng v\u1ec1 an to\u00e0n. C\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 ISO 26262 ho\u1eb7c IEC 61508 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng, y\u00eau c\u1ea7u t\u00e0i li\u1ec7u h\u00f3a nghi\u00eam ng\u1eb7t v\u00e0 x\u00e1c minh.<\/p>\n

                              Tr\u1ea1ng th\u00e1i an to\u00e0n khi l\u1ed7i<\/h3>\n

                              M\u1ed7i m\u00e1y tr\u1ea1ng th\u00e1i ph\u1ea3i c\u00f3 m\u1ed9t tr\u1ea1ng th\u00e1i an to\u00e0n khi l\u1ed7i \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 tr\u1ea1ng th\u00e1i m\u00e0 h\u1ec7 th\u1ed1ng s\u1ebd v\u00e0o n\u1ebfu ph\u00e1t hi\u1ec7n l\u1ed7i nghi\u00eam tr\u1ecdng, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1ed7i h\u1ecfng b\u1ed9 nh\u1edb ho\u1eb7c h\u1ebft th\u1eddi gian ch\u1edd c\u1ee7a b\u1ed9 gi\u00e1m s\u00e1t. Tr\u1ea1ng th\u00e1i an to\u00e0n khi l\u1ed7i ph\u1ea3i \u1ed5n \u0111\u1ecbnh v\u00e0 ng\u0103n ng\u1eeba thi\u1ec7t h\u1ea1i th\u00eam.<\/p>\n

                              T\u00ednh d\u1ef1 ph\u00f2ng<\/h3>\n

                              Trong c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 \u0111\u1ed9 tin c\u1eady cao, c\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i k\u00e9p c\u00f3 th\u1ec3 ch\u1ea1y song song. M\u1ed9t m\u00e1y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ch\u1ee7, m\u00e1y c\u00f2n l\u1ea1i ho\u1ea1t \u0111\u1ed9ng nh\u01b0 ki\u1ec3m tra. N\u1ebfu \u0111\u1ea7u ra kh\u00e1c nhau, h\u1ec7 th\u1ed1ng s\u1ebd k\u00edch ho\u1ea1t t\u1eaft an to\u00e0n.<\/p>\n

                              B\u1ea3n \u0111\u1ed3 tri\u1ec3n khai \ud83d\udee3\ufe0f<\/h2>\n

                              Ph\u00e1t tri\u1ec3n m\u00e1y tr\u1ea1ng th\u00e1i cho s\u1ea3n ph\u1ea9m nh\u00fang tu\u00e2n theo m\u1ed9t l\u1ed9 tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac:<\/p>\n

                                \n
                              1. Ph\u00e2n t\u00edch y\u00eau c\u1ea7u:<\/strong>X\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng v\u00e0 s\u1ef1 ki\u1ec7n.<\/li>\n
                              2. M\u00f4 h\u00ecnh h\u00f3a:<\/strong>T\u1ea1o s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i UML. X\u00e1c minh logic v\u1edbi c\u00e1c b\u00ean li\u00ean quan.<\/li>\n
                              3. T\u1ea1o m\u00e3:<\/strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh ho\u1eb7c vi\u1ebft m\u00e3 C th\u1ee7 c\u00f4ng d\u1ef1a tr\u00ean s\u01a1 \u0111\u1ed3.<\/li>\n
                              4. Ki\u1ec3m th\u1eed \u0111\u01a1n v\u1ecb:<\/strong>Ki\u1ec3m th\u1eed t\u1eebng chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 ri\u00eang bi\u1ec7t.<\/li>\n
                              5. Ki\u1ec3m th\u1eed t\u00edch h\u1ee3p:<\/strong>Ki\u1ec3m th\u1eed m\u00e1y tr\u1ea1ng th\u00e1i trong b\u1ed1i c\u1ea3nh h\u1ec7 th\u1ed1ng \u0111\u1ea7y \u0111\u1ee7, bao g\u1ed3m t\u01b0\u01a1ng t\u00e1c v\u1edbi ph\u1ea7n c\u1ee9ng.<\/li>\n
                              6. Tri\u1ec3n khai:<\/strong>Ghi v\u00e0o ph\u1ea7n c\u1ee9ng v\u00e0 theo d\u00f5i h\u00e0nh vi trong th\u1ef1c t\u1ebf.<\/li>\n<\/ol>\n

                                Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i \ud83c\udfaf<\/h2>\n

                                S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t trong kho v\u0169 kh\u00ed c\u1ee7a k\u1ef9 s\u01b0 nh\u00fang. N\u00f3 bi\u1ebfn c\u00e1c y\u00eau c\u1ea7u tr\u1eebu t\u01b0\u1ee3ng th\u00e0nh logic c\u1ee5 th\u1ec3 v\u00e0 c\u00f3 th\u1ec3 ki\u1ec3m ch\u1ee9ng \u0111\u01b0\u1ee3c. B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u1ea9n th\u1eadn c\u00e1c chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t m\u00e0 c\u00f2n b\u1ec1n b\u1ec9 tr\u01b0\u1edbc b\u1ea3n ch\u1ea5t kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc c\u1ee7a m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n

                                Khi c\u00e1c h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n, vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a tr\u01b0\u1edbc khi l\u1eadp tr\u00ecnh tr\u1edf n\u00ean ng\u00e0y c\u00e0ng c\u00f3 gi\u00e1 tr\u1ecb. M\u1ed9t m\u00e1y tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t gi\u00fap gi\u1ea3m n\u1ee3 k\u1ef9 thu\u1eadt, \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c g\u1ee1 l\u1ed7i v\u00e0 cung c\u1ea5p b\u1ea3n v\u1ebd r\u00f5 r\u00e0ng cho b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai. D\u00f9 \u0111ang qu\u1ea3n l\u00fd m\u1ed9t c\u1ea3m bi\u1ebfn \u0111\u01a1n gi\u1ea3n hay ph\u1ed1i h\u1ee3p m\u1ed9t b\u1ed9 vi x\u1eed l\u00fd \u0111a l\u00f5i ph\u1ee9c t\u1ea1p, c\u00e1c nguy\u00ean t\u1eafc v\u1ec1 tr\u1ea1ng th\u00e1i, chuy\u1ec3n ti\u1ebfp v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 v\u1eabn lu\u00f4n kh\u00f4ng \u0111\u1ed5i. Th\u00e0nh th\u1ea1o c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u1ea3m b\u1ea3o ph\u1ea7n m\u1ec1m \u0111i\u1ec1u khi\u1ec3n ph\u1ea7n c\u1ee9ng ho\u1ea1t \u0111\u1ed9ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0 c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt hi\u1ec7n \u0111\u1ea1i \u0111\u00f2i h\u1ecfi.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                C\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n r\u1eddi r\u1ea1c v\u00e0<\/p>\n","protected":false},"author":3479,"featured_media":11200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Ph\u00e2n t\u00edch s\u00e2u s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i: Chuy\u1ec3n ti\u1ebfp v\u00e0 \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 cho h\u1ec7 th\u1ed1ng nh\u00fang \u2699\ufe0f","_yoast_wpseo_metadesc":"Kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i UML cho h\u1ec7 th\u1ed1ng nh\u00fang. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 chuy\u1ec3n ti\u1ebfp, \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 v\u00e0 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i nh\u1eb1m x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c b\u1ec1n v\u1eefng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[127],"tags":[162,101],"class_list":["post-11199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-uml"],"yoast_head":"\nPh\u00e2n t\u00edch s\u00e2u s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i: Chuy\u1ec3n ti\u1ebfp v\u00e0 \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 cho h\u1ec7 th\u1ed1ng nh\u00fang \u2699\ufe0f<\/title>\n<meta name=\"description\" content=\"Kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i UML cho h\u1ec7 th\u1ed1ng nh\u00fang. 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