{"id":475925,"date":"2023-08-09T07:24:43","date_gmt":"2023-08-09T07:24:43","guid":{"rendered":""},"modified":"2023-09-05T11:11:38","modified_gmt":"2023-09-05T11:11:38","slug":"asynchronous-data-transmission","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/asynchronous-data-transmission\/","title":{"rendered":"Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9"},"content":{"rendered":"

Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n d\u1eef li\u1ec7u cho ph\u00e9p g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ed9c l\u1eadp m\u00e0 kh\u00f4ng y\u00eau c\u1ea7u k\u1ebft n\u1ed1i \u0111\u1ed3ng b\u1ed9, li\u00ean t\u1ee5c gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn. Kh\u00f4ng gi\u1ed1ng nh\u01b0 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ed3ng b\u1ed9, d\u1ef1a v\u00e0o t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3 \u0111\u1ec3 \u0111i\u1ec1u ph\u1ed1i truy\u1ec1n d\u1eef li\u1ec7u, truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u01a1 s\u1edf b\u1eaft \u0111\u1ea7u-d\u1eebng. N\u00f3 cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u ho\u1eb7c t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a d\u1eef li\u1ec7u kh\u00e1c nhau giao ti\u1ebfp hi\u1ec7u qu\u1ea3, n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh linh ho\u1ea1t cao h\u01a1n trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n

L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3.<\/h2>\n

Kh\u00e1i ni\u1ec7m truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n b\u00e1o v\u00e0o gi\u1eefa th\u1ebf k\u1ef7 19. Trong th\u1eddi gian n\u00e0y, c\u00e1c nh\u00e0 khai th\u00e1c \u0111i\u1ec7n b\u00e1o \u0111\u00e3 s\u1eed d\u1ee5ng m\u1ed9t k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 t\u00edn hi\u1ec7u \u201cb\u1eaft \u0111\u1ea7u-d\u1eebng\u201d ho\u1eb7c \u201ckh\u00f4ng \u0111\u1ed3ng b\u1ed9\u201d \u0111\u1ec3 truy\u1ec1n c\u00e1c th\u00f4ng \u0111i\u1ec7p m\u00e3 Morse tr\u00ean m\u1ed9t kho\u1ea3ng c\u00e1ch d\u00e0i. Ph\u01b0\u01a1ng ph\u00e1p b\u1eaft \u0111\u1ea7u-d\u1eebng li\u00ean quan \u0111\u1ebfn vi\u1ec7c g\u1eedi c\u00e1c k\u00fd t\u1ef1 ri\u00eang l\u1ebb theo c\u00e1ch tu\u1ea7n t\u1ef1, cho ph\u00e9p linh ho\u1ea1t \u0111i\u1ec1u ch\u1ec9nh c\u00e1c bi\u1ebfn th\u1ec3 v\u1ec1 th\u1eddi gian c\u1ee7a m\u1ed7i l\u1ea7n truy\u1ec1n k\u00fd t\u1ef1.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/h2>\n

Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c m\u1ea1ng m\u00e1y t\u00ednh v\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i. N\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t kh\u00eda c\u1ea1nh c\u01a1 b\u1ea3n c\u1ee7a giao ti\u1ebfp d\u1eef li\u1ec7u cho c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c nhau, bao g\u1ed3m UART (B\u1ed9 thu-ph\u00e1t kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ph\u1ed5 qu\u00e1t), USB (Bus n\u1ed1i ti\u1ebfp \u0111a n\u0103ng) v\u00e0 Ethernet. Trong c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y, vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u00e0 thi\u1ebft b\u1ecb ngo\u1ea1i vi kh\u00e1c nhau.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9. C\u00e1ch truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ho\u1ea1t \u0111\u1ed9ng.<\/h2>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 bao g\u1ed3m m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh:<\/p>\n

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  1. \n

    Bit b\u1eaft \u0111\u1ea7u:<\/strong> Qu\u00e1 tr\u00ecnh truy\u1ec1n b\u1eaft \u0111\u1ea7u b\u1eb1ng bit b\u1eaft \u0111\u1ea7u, bit n\u00e0y b\u00e1o hi\u1ec7u s\u1ef1 b\u1eaft \u0111\u1ea7u c\u1ee7a g\u00f3i d\u1eef li\u1ec7u m\u1edbi. N\u00f3 lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c logic 0 (th\u1ea5p).<\/p>\n<\/li>\n

  2. \n

    Bit d\u1eef li\u1ec7u:<\/strong> C\u00e1c bit n\u00e0y \u0111\u1ea1i di\u1ec7n cho d\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i. S\u1ed1 l\u01b0\u1ee3ng bit d\u1eef li\u1ec7u kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o giao th\u1ee9c truy\u1ec1n th\u00f4ng v\u00e0 c\u00f3 th\u1ec3 l\u00e0 7, 8 ho\u1eb7c th\u1eadm ch\u00ed nhi\u1ec1u h\u01a1n.<\/p>\n<\/li>\n

  3. \n

    Bit ch\u1eb5n l\u1ebb (t\u00f9y ch\u1ecdn):<\/strong> M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 bao g\u1ed3m bit ch\u1eb5n l\u1ebb, gi\u00fap ph\u00e1t hi\u1ec7n l\u1ed7i trong qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u. Bit ch\u1eb5n l\u1ebb c\u00f3 th\u1ec3 l\u00e0 s\u1ed1 ch\u1eb5n ho\u1eb7c s\u1ed1 l\u1ebb v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ed1 1 ch\u1eb5n ho\u1eb7c l\u1ebb trong g\u00f3i d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

  4. \n

    D\u1eebng l\u1ea1i m\u1ed9t ch\u00fat):<\/strong> Sau c\u00e1c bit d\u1eef li\u1ec7u v\u00e0 bit ch\u1eb5n l\u1ebb t\u00f9y ch\u1ecdn, ti\u1ebfp theo l\u00e0 m\u1ed9t ho\u1eb7c nhi\u1ec1u bit d\u1eebng. (C\u00e1c) bit d\u1eebng cho bi\u1ebft s\u1ef1 k\u1ebft th\u00fac c\u1ee7a g\u00f3i d\u1eef li\u1ec7u v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c logic l\u00e0 1 (cao).<\/p>\n<\/li>\n<\/ol>\n

    C\u00e1c bit b\u1eaft \u0111\u1ea7u v\u00e0 d\u1eebng cung c\u1ea5p c\u00e1c \u0111i\u1ec3m \u0111\u1ed3ng b\u1ed9 h\u00f3a \u0111\u1ec3 ng\u01b0\u1eddi nh\u1eadn nh\u1eadn ra ph\u1ea7n \u0111\u1ea7u v\u00e0 ph\u1ea7n cu\u1ed1i c\u1ee7a m\u1ed7i g\u00f3i d\u1eef li\u1ec7u. Do ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a ho\u00e0n h\u1ea3o n\u00ean vi\u1ec7c truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cho ph\u00e9p thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng giao ti\u1ebfp \u0111a d\u1ea1ng.<\/p>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/h2>\n

    Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh gi\u00fap n\u00f3 c\u00f3 gi\u00e1 tr\u1ecb trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau:<\/p>\n

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    1. \n

      Uy\u1ec3n chuy\u1ec3n:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb c\u00f3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ho\u1eb7c t\u00ednh kh\u1ea3 d\u1ee5ng kh\u00e1c nhau giao ti\u1ebfp hi\u1ec7u qu\u1ea3, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n trao \u0111\u1ed5i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p.<\/p>\n<\/li>\n

    2. \n

      Ph\u00e1t hi\u1ec7n l\u1ed7i:<\/strong> V\u1edbi bit ch\u1eb5n l\u1ebb t\u00f9y ch\u1ecdn, vi\u1ec7c truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i bit \u0111\u01a1n trong d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n, n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

    3. \n

      Th\u1ef1c hi\u1ec7n \u0111\u01a1n gi\u1ea3n:<\/strong> Ph\u01b0\u01a1ng ph\u00e1p start-stop t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 th\u1ef1c hi\u1ec7n n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c giao th\u1ee9c truy\u1ec1n th\u00f4ng kh\u00e1c nhau.<\/p>\n<\/li>\n

    4. \n

      Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 giao th\u1ee9c, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn linh ho\u1ea1t \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

      Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh hai lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng bit d\u1eebng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n\n\n\n\n\n\n
      Ki\u1ec3u<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      1-bit d\u1eebng kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/td>\nS\u1eed d\u1ee5ng m\u1ed9t bit d\u1eebng \u0111\u1ec3 ch\u1ec9 ra s\u1ef1 k\u1ebft th\u00fac c\u1ee7a g\u00f3i d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n
      2-bit d\u1eebng kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/td>\nS\u1eed d\u1ee5ng hai bit d\u1eebng \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ed3n v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1ch s\u1eed d\u1ee5ng Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng.<\/h2>\n

      Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau:<\/p>\n

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      1. \n

        Truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giao ti\u1ebfp n\u1ed1i ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, ch\u1eb3ng h\u1ea1n nh\u01b0 k\u1ebft n\u1ed1i UART v\u00e0 RS-232.<\/p>\n<\/li>\n

      2. \n

        Internet v\u1ea1n v\u1eadt (IoT):<\/strong> C\u00e1c thi\u1ebft b\u1ecb IoT th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 \u0111\u1ec3 li\u00ean l\u1ea1c v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 t\u1eadp trung, cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 tr\u00ean c\u00e1c m\u1ea1ng kh\u00e1c nhau.<\/p>\n<\/li>\n

      3. \n

        \u0110\u0103ng nh\u1eadp v\u00e0o d\u1eef li\u1ec7u:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 l\u1ee3i trong c\u00e1c \u1ee9ng d\u1ee5ng ghi d\u1eef li\u1ec7u, trong \u0111\u00f3 d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u c\u1ea3m bi\u1ebfn ho\u1eb7c ngu\u1ed3n c\u1ea7n \u0111\u01b0\u1ee3c thu th\u1eadp v\u00e0 ghi l\u1ea1i m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp.<\/p>\n<\/li>\n<\/ol>\n

        Tuy nhi\u00ean, m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c c\u00f3 th\u1ec3 n\u1ea3y sinh khi truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9:<\/p>\n

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        1. \n

          L\u1ed7i \u0111\u1ed3ng b\u1ed9 h\u00f3a:<\/strong> Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c nh\u1eadn d\u1ea1ng bit b\u1eaft \u0111\u1ea7u v\u00e0 d\u1eebng ch\u00ednh x\u00e1c, khi\u1ebfn n\u00f3 d\u1ec5 x\u1ea3y ra l\u1ed7i \u0111\u1ed3ng b\u1ed9 h\u00f3a n\u1ebfu c\u00e1c bit n\u00e0y b\u1ecb hi\u1ec3u sai.<\/p>\n<\/li>\n

        2. \n

          Tr\u00e0n d\u1eef li\u1ec7u:<\/strong> Trong giao ti\u1ebfp t\u1ed1c \u0111\u1ed9 cao, ng\u01b0\u1eddi nh\u1eadn c\u00f3 th\u1ec3 kh\u00f4ng th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u nhanh nh\u01b0 khi nh\u1eadn \u0111\u01b0\u1ee3c, d\u1eabn \u0111\u1ebfn tr\u00e0n d\u1eef li\u1ec7u v\u00e0 c\u00f3 th\u1ec3 m\u1ea5t d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

        3. \n

          S\u1eeda l\u1ed7i:<\/strong> M\u1eb7c d\u00f9 bit ch\u1eb5n l\u1ebb c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i bit \u0111\u01a1n nh\u01b0ng n\u00f3 kh\u00f4ng th\u1ec3 s\u1eeda ch\u00fang. \u0110\u1ec3 s\u1eeda l\u1ed7i m\u1ea1nh m\u1ebd h\u01a1n, c\u00e1c c\u01a1 ch\u1ebf ki\u1ec3m tra l\u1ed7i b\u1ed5 sung nh\u01b0 CRC (Ki\u1ec3m tra d\u1ef1 ph\u00f2ng theo chu k\u1ef3) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n<\/li>\n<\/ol>\n

          C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n\n\n\n\n\n\n\n\n\n\n
          \u0111\u1eb7c tr\u01b0ng<\/th>\nTruy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/th>\nTruy\u1ec1n d\u1eef li\u1ec7u \u0111\u1ed3ng b\u1ed9<\/th>\n<\/tr>\n<\/thead>\n
          C\u01a1 ch\u1ebf th\u1eddi gian<\/td>\nT\u00edn hi\u1ec7u kh\u1edfi \u0111\u1ed9ng-d\u1eebng<\/td>\nT\u00edn hi\u1ec7u d\u1ef1a tr\u00ean \u0111\u1ed3ng h\u1ed3<\/td>\n<\/tr>\n
          Y\u00eau c\u1ea7u \u0111\u1ed3ng b\u1ed9 h\u00f3a<\/td>\nKh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a<\/td>\n\u0110\u00e3 \u0111\u1ed3ng b\u1ed9 h\u00f3a<\/td>\n<\/tr>\n
          T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u linh ho\u1ea1t<\/td>\nCao<\/td>\nGi\u1edbi h\u1ea1n<\/td>\n<\/tr>\n
          C\u01a1 ch\u1ebf ph\u00e1t hi\u1ec7n l\u1ed7i<\/td>\nBit ch\u1eb5n l\u1ebb (t\u00f9y ch\u1ecdn)<\/td>\nCRC, t\u1ed5ng ki\u1ec3m tra<\/td>\n<\/tr>\n
          \u0110\u1ed9 ph\u1ee9c t\u1ea1p tri\u1ec3n khai<\/td>\nTh\u1ea5p<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
          C\u00e1c \u1ee9ng d\u1ee5ng<\/td>\nUART, IoT, Ghi nh\u1eadt k\u00fd d\u1eef li\u1ec7u<\/td>\nM\u1ea1ng LAN, WAN, H\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Tri\u1ec3n v\u1ecdng v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/h2>\n

          Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, vai tr\u00f2 c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 s\u1ebd m\u1edf r\u1ed9ng h\u01a1n n\u1eefa. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai bao g\u1ed3m:<\/p>\n

            \n
          1. \n

            T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n:<\/strong> Nh\u1eefng ti\u1ebfn b\u1ed9 v\u1ec1 ph\u1ea7n c\u1ee9ng v\u00e0 giao th\u1ee9c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n n\u1eefa trong vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9, cho ph\u00e9p truy\u1ec1n th\u00f4ng nhanh h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<\/li>\n

          2. \n

            C\u1ea3i thi\u1ec7n s\u1eeda l\u1ed7i:<\/strong> C\u00e1c k\u1ef9 thu\u1eadt s\u1eeda l\u1ed7i ph\u1ee9c t\u1ea1p h\u01a1n c\u00f3 th\u1ec3 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9, gi\u1ea3m kh\u1ea3 n\u0103ng x\u1ea3y ra l\u1ed7i d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

          3. \n

            T\u00edch h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i:<\/strong> Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p ch\u1eb7t ch\u1ebd h\u01a1n v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i, ch\u1eb3ng h\u1ea1n nh\u01b0 5G, \u0111i\u1ec7n to\u00e1n bi\u00ean v\u00e0 truy\u1ec1n th\u00f4ng l\u01b0\u1ee3ng t\u1eed.<\/p>\n<\/li>\n<\/ol>\n

            C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/h2>\n

            M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 b\u1ed5 sung cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau:<\/p>\n

              \n
            1. \n

              B\u1ed9 nh\u1edb \u0111\u1ec7m:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u th\u01b0\u1eddng xuy\u00ean v\u00e0o b\u1ed9 \u0111\u1ec7m, gi\u1ea3m nhu c\u1ea7u l\u1eb7p l\u1ea1i c\u00e1c y\u00eau c\u1ea7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 t\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n

            2. \n

              C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i c\u00e1c y\u00eau c\u1ea7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9 tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n

            3. \n

              B\u1ea3o m\u1eadt v\u00e0 \u1ea9n danh:<\/strong> M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trung gian, cung c\u1ea5p th\u00eam l\u1edbp b\u1ea3o m\u1eadt v\u00e0 \u1ea9n danh cho vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/p>\n<\/li>\n<\/ol>\n

              Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

              \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

                \n
              1. Wikipedia - Giao ti\u1ebfp n\u1ed1i ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n
              2. H\u01b0\u1edbng d\u1eabn v\u1ec1 \u0110i\u1ec7n t\u1eed \u2013 Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n
              3. Techopedia \u2013 Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n<\/ol>","protected":false},"featured_media":467657,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475925","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Asynchronous Data Transmission: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is asynchronous data transmission?","answer":"

                Asynchronous data transmission is a method of data transfer that allows for the independent sending and receiving of data without requiring a constant, synchronized connection between the sender and receiver. It operates on a start-stop basis, making it flexible for devices with different data rates to communicate effectively.<\/p>"},{"question":"How did asynchronous data transmission originate?","answer":"

                The concept of asynchronous data transmission dates back to the early days of telegraphy in the mid-19th century. Telegraph operators used a start-stop method to transmit Morse code messages, enabling effective communication over long distances.<\/p>"},{"question":"How does asynchronous data transmission work?","answer":"

                Asynchronous data transmission involves sending data with start and stop bits. The start bit indicates the beginning of a data packet, followed by data bits representing the actual data. An optional parity bit can be included for error detection. One or more stop bits indicate the end of the data packet.<\/p>"},{"question":"What are the key features of asynchronous data transmission?","answer":"

                Asynchronous data transmission offers flexibility, error detection with the parity bit, simplicity in implementation, and compatibility with various devices and protocols.<\/p>"},{"question":"What types of asynchronous data transmission exist?","answer":"

                Asynchronous data transmission can be categorized into two types based on the number of stop bits used: 1-stop bit and 2-stop bits asynchronous transmission.<\/p>"},{"question":"Where can asynchronous data transmission be used?","answer":"

                Asynchronous data transmission finds applications in various fields, including serial communication, Internet of Things (IoT), and data logging.<\/p>"},{"question":"What are the challenges related to asynchronous data transmission?","answer":"

                Challenges with asynchronous data transmission include synchronization errors, data overrun in high-speed communication, and limited error correction capability.<\/p>"},{"question":"How does asynchronous data transmission compare to synchronous data transmission?","answer":"

                Asynchronous data transmission relies on start-stop signaling and does not require synchronization, whereas synchronous data transmission relies on clock-based signaling with strict synchronization. Asynchronous transmission offers higher data rate flexibility but limited error detection mechanisms compared to synchronous transmission.<\/p>"},{"question":"What does the future hold for asynchronous data transmission?","answer":"

                In the future, asynchronous data transmission is expected to witness higher data rates, improved error correction techniques, and integration with emerging technologies like 5G and edge computing.<\/p>"},{"question":"How can proxy servers be associated with asynchronous data transmission?","answer":"

                Proxy servers can complement asynchronous data transmission by caching frequently requested data, load balancing asynchronous requests, and providing an additional layer of security and anonymity.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475925\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/467657"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=475925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}