{"id":475991,"date":"2023-08-09T07:25:33","date_gmt":"2023-08-09T07:25:33","guid":{"rendered":""},"modified":"2023-09-05T11:11:48","modified_gmt":"2023-09-05T11:11:48","slug":"baud-rate","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/baud-rate\/","title":{"rendered":"T\u1ed1c \u0111\u1ed9 truy\u1ec1n"},"content":{"rendered":"

T\u1ed1c \u0111\u1ed9 truy\u1ec1n, trong b\u1ed1i c\u1ea3nh truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u s\u1ed1 qua k\u00eanh truy\u1ec1n th\u00f4ng. \u0110\u00e2y l\u00e0 th\u00f4ng s\u1ed1 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb. Thu\u1eadt ng\u1eef \u201cbaud\u201d th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00f4ng ch\u00ednh x\u00e1c khi thay th\u1ebf cho nhau v\u1edbi \u201cbit tr\u00ean gi\u00e2y\u201d (bps), nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf, t\u1ed1c \u0111\u1ed9 truy\u1ec1n bi\u1ec3u th\u1ecb s\u1ed1 l\u1ea7n thay \u0111\u1ed5i t\u00edn hi\u1ec7u m\u1ed7i gi\u00e2y, trong khi bit tr\u00ean gi\u00e2y bi\u1ec3u th\u1ecb s\u1ed1 bit d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n m\u1ed7i gi\u00e2y.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a t\u1ed1c \u0111\u1ed9 Baud v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n

Kh\u00e1i ni\u1ec7m t\u1ed1c \u0111\u1ed9 baud b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n b\u00e1o, c\u00f3 ni\u00ean \u0111\u1ea1i t\u1eeb th\u1ebf k\u1ef7 19. N\u0103m 1843, k\u1ef9 s\u01b0 ng\u01b0\u1eddi Ph\u00e1p Emile Baudot \u0111\u00e3 ph\u00e1t minh ra m\u00e3 Baudot, m\u1ed9t m\u00e3 nh\u1ecb ph\u00e2n 5 bit t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u \u0111i\u1ec7n b\u00e1o. T\u1ed1c \u0111\u1ed9 truy\u1ec1n ban \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec7n b\u00e1o n\u00e0y, bi\u1ec3u th\u1ecb s\u1ed1 l\u1ea7n \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n b\u00e1o thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i trong m\u1ed7i gi\u00e2y.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 t\u1ed1c \u0111\u1ed9 Baud \u2013 M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1<\/h2>\n

Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, t\u1ed1c \u0111\u1ed9 baud bi\u1ec3u th\u1ecb s\u1ed1 l\u1ea7n thay \u0111\u1ed5i t\u00edn hi\u1ec7u m\u1ed7i gi\u00e2y v\u00e0 n\u00f3 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c thi\u1ebft l\u1eadp t\u1ed1c \u0111\u1ed9 li\u00ean l\u1ea1c gi\u1eefa hai thi\u1ebft b\u1ecb. Tuy nhi\u00ean, v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a c\u00f4ng ngh\u1ec7 v\u00e0 s\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf ph\u1ee9c t\u1ea1p h\u01a1n, m\u1ed1i quan h\u1ec7 gi\u1eefa t\u1ed1c \u0111\u1ed9 baud v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n

Trong c\u00e1c s\u01a1 \u0111\u1ed3 \u0111i\u1ec1u ch\u1ebf truy\u1ec1n th\u1ed1ng, m\u1ed9t k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u th\u1ecb m\u1ed9t bit d\u1eef li\u1ec7u, l\u00e0m cho t\u1ed1c \u0111\u1ed9 truy\u1ec1n v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. Tuy nhi\u00ean, v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf ti\u00ean ti\u1ebfn h\u01a1n nh\u01b0 \u0110i\u1ec1u ch\u1ebf bi\u00ean \u0111\u1ed9 c\u1ea7u ph\u01b0\u01a1ng (QAM) v\u00e0 Kh\u00f3a d\u1ecbch pha (PSK), nhi\u1ec1u bit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a trong m\u1ed9t k\u00fd hi\u1ec7u duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ed1c \u0111\u1ed9 baud v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c truy\u1ec1n.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a t\u1ed1c \u0111\u1ed9 Baud \u2013 T\u1ed1c \u0111\u1ed9 Baud ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a t\u1ed1c \u0111\u1ed9 baud g\u1eafn ch\u1eb7t v\u1edbi k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng. M\u00e1y ph\u00e1t m\u00e3 h\u00f3a d\u1eef li\u1ec7u s\u1ed1 th\u00e0nh c\u00e1c k\u00fd hi\u1ec7u v\u00e0 c\u00e1c k\u00fd hi\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c truy\u1ec1n qua k\u00eanh li\u00ean l\u1ea1c \u1edf t\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u1ee5 th\u1ec3. \u1ede \u0111\u1ea7u nh\u1eadn, ng\u01b0\u1eddi nh\u1eadn gi\u1ea3i m\u00e3 c\u00e1c k\u00fd hi\u1ec7u tr\u1edf l\u1ea1i d\u1eef li\u1ec7u s\u1ed1 ban \u0111\u1ea7u.<\/p>\n

Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a t\u1ed1c \u0111\u1ed9 Baud<\/h2>\n

M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh v\u00e0 nh\u1eefng c\u00e2n nh\u1eafc li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n nh\u01b0 sau:<\/p>\n

    \n
  1. \n

    T\u1ef7 l\u1ec7 t\u00edn hi\u1ec7u tr\u00ean t\u1ea1p \u00e2m (SNR): Khi t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u0103ng, th\u1eddi l\u01b0\u1ee3ng t\u00edn hi\u1ec7u gi\u1ea3m, khi\u1ebfn vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1ec5 b\u1ecb nhi\u1ec5u h\u01a1n. Duy tr\u00ec SNR \u0111\u1ea7y \u0111\u1ee7 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 li\u00ean l\u1ea1c \u0111\u00e1ng tin c\u1eady.<\/p>\n<\/li>\n

  2. \n

    Y\u00eau c\u1ea7u v\u1ec1 b\u0103ng th\u00f4ng: T\u1ed1c \u0111\u1ed9 truy\u1ec1n cao h\u01a1n \u0111\u00f2i h\u1ecfi b\u0103ng th\u00f4ng r\u1ed9ng h\u01a1n, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 h\u1ea1n ch\u1ebf trong m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<\/li>\n

  3. \n

    T\u1ef7 l\u1ec7 l\u1ed7i bit (BER): T\u1ed1c \u0111\u1ed9 truy\u1ec1n cao h\u01a1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 l\u1ed7i bit t\u0103ng l\u00ean, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c k\u00eanh truy\u1ec1n th\u00f4ng \u1ed3n \u00e0o.<\/p>\n<\/li>\n

  4. \n

    Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch: C\u1ea3 m\u00e1y ph\u00e1t v\u00e0 m\u00e1y thu ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f9ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u th\u00e0nh c\u00f4ng.<\/p>\n<\/li>\n<\/ol>\n

    C\u00e1c lo\u1ea1i t\u1ed1c \u0111\u1ed9 Baud<\/h2>\n

    C\u00e1c lo\u1ea1i t\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean c\u00e1ch s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a ch\u00fang trong c\u00e1c ti\u00eau chu\u1ea9n truy\u1ec1n th\u00f4ng kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 t\u1ed1c \u0111\u1ed9 truy\u1ec1n \u0111i\u1ec3n h\u00ecnh v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
    T\u1ed1c \u0111\u1ed9 truy\u1ec1n<\/th>\nT\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u (bps)<\/th>\n<\/tr>\n<\/thead>\n
    300<\/td>\n300<\/td>\n<\/tr>\n
    1200<\/td>\n1200<\/td>\n<\/tr>\n
    2400<\/td>\n2400<\/td>\n<\/tr>\n
    9600<\/td>\n9600<\/td>\n<\/tr>\n
    19200<\/td>\n19200<\/td>\n<\/tr>\n
    57600<\/td>\n57600<\/td>\n<\/tr>\n
    115200<\/td>\n115200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    C\u00e1ch s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 Baud, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

    T\u1ed1c \u0111\u1ed9 truy\u1ec1n \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng truy\u1ec1n th\u00f4ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n

      \n
    1. \n

      Giao ti\u1ebfp n\u1ed1i ti\u1ebfp: T\u1ed1c \u0111\u1ed9 truy\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c giao di\u1ec7n giao ti\u1ebfp n\u1ed1i ti\u1ebfp nh\u01b0 UART (B\u1ed9 thu\/ph\u00e1t kh\u00f4ng \u0111\u1ed3ng b\u1ed9 ph\u1ed5 qu\u00e1t) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n<\/li>\n

    2. \n

      Truy\u1ec1n th\u00f4ng modem: Trong truy\u1ec1n th\u00f4ng modem, t\u1ed1c \u0111\u1ed9 baud x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u qua \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n tho\u1ea1i.<\/p>\n<\/li>\n<\/ol>\n

      Tuy nhi\u00ean, m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 n\u1ea3y sinh khi s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n:<\/p>\n

        \n
      1. \n

        \u0110\u1ed3ng b\u1ed9 h\u00f3a: M\u00e1y thu ph\u1ea3i \u0111\u1ed3ng b\u1ed9 ch\u00ednh x\u00e1c v\u1edbi t\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u1ee7a m\u00e1y ph\u00e1t \u0111\u1ec3 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n

      2. \n

        Bi\u1ebfn d\u1ea1ng t\u00edn hi\u1ec7u: T\u1ed1c \u0111\u1ed9 truy\u1ec1n cao c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng t\u00edn hi\u1ec7u do b\u0103ng th\u00f4ng h\u1ea1n ch\u1ebf ho\u1eb7c suy gi\u1ea3m \u0111\u01b0\u1eddng truy\u1ec1n.<\/p>\n<\/li>\n<\/ol>\n

        \u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 m\u00e3 s\u1eeda l\u1ed7i v\u00e0 c\u00e2n b\u1eb1ng t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n

        C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n\n\n\n\n\n\n\n
        \u0110\u1eb7c \u0111i\u1ec3m t\u1ed1c \u0111\u1ed9 Baud<\/th>\nSo s\u00e1nh v\u1edbi BPS (Bit tr\u00ean gi\u00e2y)<\/th>\n<\/tr>\n<\/thead>\n
        Bi\u1ec3u th\u1ecb s\u1ef1 thay \u0111\u1ed5i t\u00edn hi\u1ec7u m\u1ed7i gi\u00e2y<\/td>\nBPS \u0111\u1ea1i di\u1ec7n cho s\u1ed1 bit d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n m\u1ed7i gi\u00e2y<\/td>\n<\/tr>\n
        D\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u<\/td>\nBPS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay th\u1ebf cho nhau nh\u01b0ng kh\u00f4ng ch\u00ednh x\u00e1c \u0111\u1ec3 ch\u1ec9 t\u1ed1c \u0111\u1ed9 truy\u1ec1n<\/td>\n<\/tr>\n
        Quan tr\u1ecdng cho vi\u1ec7c \u0111\u1ed3ng b\u1ed9 h\u00f3a trong giao ti\u1ebfp n\u1ed1i ti\u1ebfp<\/td>\nBPS r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c \u0111o l\u01b0\u1eddng hi\u1ec7u qu\u1ea3 truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 Baud<\/h2>\n

        Khi truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u1ebd v\u1eabn l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t truy\u1ec1n th\u00f4ng. C\u00e1c c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o vi\u1ec7c c\u1ea3i ti\u1ebfn c\u00e1c k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n trong khi v\u1eabn duy tr\u00ec \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u00e1ng tin c\u1eady.<\/p>\n

        C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi t\u1ed1c \u0111\u1ed9 truy\u1ec1n<\/h2>\n

        M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0, b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t. M\u1eb7c d\u00f9 m\u00e1y ch\u1ee7 proxy kh\u00f4ng li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng gi\u00e1n ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u. B\u1eb1ng c\u00e1ch ch\u1ecdn m\u00e1y ch\u1ee7 proxy th\u00edch h\u1ee3p c\u00f3 k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 tr\u1ea3i nghi\u1ec7m t\u1ed1c \u0111\u1ed9 truy\u1ec1n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n trong giao ti\u1ebfp d\u1eef li\u1ec7u c\u1ee7a h\u1ecd.<\/p>\n

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

        \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 t\u1ed1c \u0111\u1ed9 truy\u1ec1n v\u00e0 c\u00e1c ch\u1ee7 \u0111\u1ec1 li\u00ean quan, b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

          \n
        1. Hi\u1ec3u t\u1ed1c \u0111\u1ed9 Baud v\u00e0 t\u1ed1c \u0111\u1ed9 bit<\/a><\/li>\n
        2. T\u1ed1c \u0111\u1ed9 Baud so v\u1edbi t\u1ed1c \u0111\u1ed9 bit<\/a><\/li>\n
        3. Gi\u1edbi thi\u1ec7u v\u1ec1 k\u1ef9 thu\u1eadt \u0111i\u1ec1u ch\u1ebf<\/a><\/li>\n<\/ol>","protected":false},"featured_media":475992,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475991","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Baud Rate: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is baud rate?","answer":"

          Baud rate refers to the speed at which digital data is transmitted over a communication channel. It represents the number of signal changes per second and plays a crucial role in determining the efficiency and reliability of data transmission between devices.<\/p>"},{"question":"How did baud rate originate?","answer":"

          The concept of baud rate traces back to the early days of telegraphy in the 19th century. French engineer Emile Baudot invented the Baudot code, a five-bit binary code, which was the first use of baud rate to measure the speed of telegraph signals.<\/p>"},{"question":"How does baud rate work?","answer":"

          Baud rate is closely tied to the modulation technique used in communication systems. The transmitter encodes digital data into symbols, which are transmitted over the communication channel at a specific baud rate. The receiver then decodes these symbols back into the original data.<\/p>"},{"question":"What are the key features of baud rate?","answer":"

          Key features include signal-to-noise ratio (SNR) consideration for reliable communication, bandwidth requirements, bit error rate (BER), and the importance of compatibility between transmitter and receiver baud rates.<\/p>"},{"question":"What types of baud rates exist?","answer":"

          Various baud rates are commonly used in communication standards, including 300, 1200, 2400, 9600, 19200, 57600, and 115200. Each baud rate corresponds to a specific data rate in bits per second.<\/p>"},{"question":"How is baud rate used, and what problems may arise?","answer":"

          Baud rate is utilized in serial communication interfaces like UART and in modem communication over telephone lines. Problems can arise with synchronization and signal distortion due to high baud rates, but these can be mitigated using error correction codes and signal equalization.<\/p>"},{"question":"How does baud rate compare with bits per second (bps)?","answer":"

          Baud rate represents the number of signal changes per second, while bits per second (bps) indicates the number of data bits transmitted per second. Though often used interchangeably, they are not the same and serve different purposes in data communication.<\/p>"},{"question":"What are the future perspectives of baud rate?","answer":"

          As technology advances, baud rate will continue to be crucial in optimizing communication performance. Future technologies may focus on improving modulation techniques to accommodate higher data rates while ensuring reliable transmission.<\/p>"},{"question":"How are proxy servers associated with baud rate?","answer":"

          Proxy servers act as intermediaries, enhancing data privacy, security, and performance. Although not directly related, choosing the right proxy server can indirectly impact data transmission speed and improve baud rates in communication.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475991","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\/475991\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/475992"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=475991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}