{"id":477612,"date":"2023-08-09T09:17:42","date_gmt":"2023-08-09T09:17:42","guid":{"rendered":""},"modified":"2023-09-05T11:15:05","modified_gmt":"2023-09-05T11:15:05","slug":"input-output-i-o","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/input-output-i-o\/","title":{"rendered":"\u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)"},"content":{"rendered":"<p>\u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh giao ti\u1ebfp v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c m\u1ea1ng b\u00ean ngo\u00e0i c\u1ee7a n\u00f3. N\u00f3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c cho ph\u00e9p t\u01b0\u01a1ng t\u00e1c gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 h\u1ec7 th\u1ed1ng v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh. I\/O r\u1ea5t c\u1ea7n thi\u1ebft cho nhi\u1ec1u t\u00e1c v\u1ee5 \u0111i\u1ec7n to\u00e1n kh\u00e1c nhau, t\u1eeb thao t\u00e1c nh\u1eadp \u0111\u01a1n gi\u1ea3n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng th\u00f4ng qua b\u00e0n ph\u00edm ho\u1eb7c chu\u1ed9t cho \u0111\u1ebfn truy\u1ec1n d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb n\u1ed1i m\u1ea1ng.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O) v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u00e1y t\u00ednh khi m\u00e1y t\u00ednh \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh th\u00f4ng qua th\u1ebb \u0111\u1ee5c l\u1ed7 v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i teletype. V\u00e0o gi\u1eefa th\u1ebf k\u1ef7 20, m\u00e1y t\u00ednh l\u1edbn b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng I\/O \u0111\u1ec3 qu\u1ea3n l\u00fd t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi nh\u01b0 m\u00e1y in, \u0111\u1ea7u \u0111\u1ecdc th\u1ebb v\u00e0 \u1ed5 b\u0103ng t\u1eeb.<\/p>\n<p>Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn I\/O l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb th\u1eddi k\u1ef3 \u0111\u1ea7u c\u1ee7a m\u00e1y t\u00ednh l\u1edbn v\u00e0o nh\u1eefng n\u0103m 1950. Khi c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n to\u00e1n ph\u00e1t tri\u1ec3n, kh\u00e1i ni\u1ec7m I\/O \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng v\u00e0 v\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t kh\u00eda c\u1ea1nh c\u01a1 b\u1ea3n c\u1ee7a \u0111i\u1ec7n to\u00e1n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)<\/h2>\n<h3>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O) \u2013 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a I\/O<\/h3>\n<p>\u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra bao g\u1ed3m hai qu\u00e1 tr\u00ecnh ch\u00ednh: \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. Qu\u00e1 tr\u00ecnh \u0111\u1ea7u v\u00e0o x\u1eed l\u00fd vi\u1ec7c nh\u1eadn d\u1eef li\u1ec7u ho\u1eb7c l\u1ec7nh t\u1eeb c\u00e1c ngu\u1ed3n b\u00ean ngo\u00e0i, trong khi qu\u00e1 tr\u00ecnh \u0111\u1ea7u ra li\u00ean quan \u0111\u1ebfn vi\u1ec7c g\u1eedi d\u1eef li\u1ec7u ho\u1eb7c k\u1ebft qu\u1ea3 t\u1eeb h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c m\u1ea1ng b\u00ean ngo\u00e0i.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O hi\u1ec7u qu\u1ea3, c\u00e1c h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i tri\u1ec3n khai nhi\u1ec1u c\u01a1 ch\u1ebf ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m kh\u00e1c nhau. Bao g\u1ed3m c\u00e1c:<\/p>\n<ol>\n<li>\n<p><strong>K\u00eanh I\/O<\/strong>: \u0110\u00e2y l\u00e0 nh\u1eefng con \u0111\u01b0\u1eddng qua \u0111\u00f3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n gi\u1eefa CPU v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i. Ch\u00fang \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n I\/O x\u1eed l\u00fd vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u, cho ph\u00e9p CPU t\u1eadp trung v\u00e0o x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 \u0111\u1ec7m<\/strong>: B\u1ed9 \u0111\u1ec7m \u0111\u00f3ng vai tr\u00f2 l\u00e0 v\u1ecb tr\u00ed l\u01b0u tr\u1eef t\u1ea1m th\u1eddi \u0111\u1ec3 l\u01b0u gi\u1eef d\u1eef li\u1ec7u trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O. Ch\u00fang l\u00e0m d\u1ecbu \u0111i s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed1c \u0111\u1ed9 gi\u1eefa CPU v\u00e0 c\u00e1c thi\u1ebft b\u1ecb I\/O ch\u1eadm h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>Ng\u1eaft<\/strong>: Ng\u1eaft l\u00e0 t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn CPU b\u1edfi c\u00e1c thi\u1ebft b\u1ecb I\/O khi ch\u00fang c\u1ea7n ch\u00fa \u00fd. Ch\u00fang cho ph\u00e9p CPU ph\u1ea3n h\u1ed3i k\u1ecbp th\u1eddi v\u1edbi c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O nh\u1ea1y c\u1ea3m v\u1edbi th\u1eddi gian.<\/p>\n<\/li>\n<li>\n<p><strong>Truy c\u1eadp b\u1ed9 nh\u1edb tr\u1ef1c ti\u1ebfp (DMA)<\/strong>: DMA cho ph\u00e9p m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb I\/O nh\u1ea5t \u0111\u1ecbnh truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ed9 nh\u1edb c\u1ee7a m\u00e1y t\u00ednh, gi\u1ea3m s\u1ef1 tham gia c\u1ee7a CPU v\u00e0o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1eadp l\u1ecbch v\u00e0o\/ra<\/strong>: Thu\u1eadt to\u00e1n l\u1eadp l\u1ecbch I\/O x\u00e1c \u0111\u1ecbnh th\u1ee9 t\u1ef1 x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u I\/O \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O) bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>T\u00ednh hai chi\u1ec1u<\/strong>: I\/O t\u1ea1o \u0111i\u1ec1u ki\u1ec7n giao ti\u1ebfp hai chi\u1ec1u gi\u1eefa h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i, cho ph\u00e9p c\u1ea3 d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110a d\u1ea1ng<\/strong>: I\/O bao g\u1ed3m nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi truy\u1ec1n th\u1ed1ng nh\u01b0 b\u00e0n ph\u00edm v\u00e0 m\u00e1y in \u0111\u1ebfn thi\u1ebft b\u1ecb m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00e1c \u0111\u1ed9ng hi\u1ec7u su\u1ea5t<\/strong>: Ho\u1ea1t \u0111\u1ed9ng I\/O hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho hi\u1ec7u n\u0103ng h\u1ec7 th\u1ed1ng, v\u00ec I\/O ch\u1eadm ho\u1eb7c kh\u00f4ng hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 g\u00e2y t\u1eafc ngh\u1ebdn to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh t\u00ednh to\u00e1n.<\/p>\n<\/li>\n<li>\n<p><strong>X\u1eed l\u00fd l\u1ed7i<\/strong>: C\u1ea7n c\u00f3 c\u01a1 ch\u1ebf x\u1eed l\u00fd l\u1ed7i m\u1ea1nh m\u1ebd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra (I\/O)<\/h2>\n<p>I\/O c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh c\u00e1c lo\u1ea1i kh\u00e1c nhau d\u1ef1a tr\u00ean t\u00ednh ch\u1ea5t c\u1ee7a vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 c\u00e1c thi\u1ebft b\u1ecb li\u00ean quan. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i I\/O ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>I\/O n\u1ed1i ti\u1ebfp<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n tu\u1ea7n t\u1ef1, t\u1eebng bit m\u1ed9t.<\/td>\n<\/tr>\n<tr>\n<td>I\/O song song<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed3ng th\u1eddi, song song.<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1eb7n I\/O<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n trong c\u00e1c kh\u1ed1i c\u00f3 k\u00edch th\u01b0\u1edbc c\u1ed1 \u0111\u1ecbnh.<\/td>\n<\/tr>\n<tr>\n<td>V\u00e0o\/ra k\u00fd t\u1ef1<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n theo t\u1eebng k\u00fd t\u1ef1.<\/td>\n<\/tr>\n<tr>\n<td>V\u00e0o\/ra m\u1ea1ng<\/td>\n<td>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u1ea1ng.<\/td>\n<\/tr>\n<tr>\n<td>I\/O \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 b\u1ed9 nh\u1edb<\/td>\n<td>C\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 tr\u1ef1c ti\u1ebfp v\u00e0o kh\u00f4ng gian b\u1ed9 nh\u1edb.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng I\/O, 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<p>Vi\u1ec7c s\u1eed d\u1ee5ng I\/O m\u1edf r\u1ed9ng tr\u00ean nhi\u1ec1u l\u0129nh v\u1ef1c v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>T\u01b0\u01a1ng t\u00e1c ng\u01b0\u1eddi d\u00f9ng<\/strong>: I\/O t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho ng\u01b0\u1eddi d\u00f9ng nh\u1eadp li\u1ec7u th\u00f4ng qua b\u00e0n ph\u00edm, chu\u1ed9t, m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng v\u00e0 l\u1ec7nh tho\u1ea1i, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e1y t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng.<\/p>\n<\/li>\n<li>\n<p><strong>L\u01b0u tr\u1eef d\u1eef li\u1ec7u<\/strong>: I\/O r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u v\u00e0o c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef nh\u01b0 \u1ed5 c\u1ee9ng, \u1ed5 \u0111\u0129a th\u1ec3 r\u1eafn v\u00e0 ph\u01b0\u01a1ng ti\u1ec7n quang h\u1ecdc.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng<\/strong>: I\/O r\u1ea5t c\u1ea7n thi\u1ebft cho giao ti\u1ebfp m\u1ea1ng, cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u00e1y t\u00ednh qua internet ho\u1eb7c m\u1ea1ng c\u1ee5c b\u1ed9.<\/p>\n<\/li>\n<li>\n<p><strong>In \u1ea5n<\/strong>: I\/O cho ph\u00e9p m\u00e1y t\u00ednh giao ti\u1ebfp v\u1edbi m\u00e1y in v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u ra kh\u00e1c \u0111\u1ec3 t\u1ea1o ra c\u00e1c b\u1ea3n sao v\u1eadt l\u00fd c\u1ee7a n\u1ed9i dung s\u1ed1.<\/p>\n<\/li>\n<\/ol>\n<p>M\u1eb7c d\u00f9 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3, I\/O c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c:<\/p>\n<ul>\n<li>\n<p><strong>\u0110\u1ed9 tr\u1ec5<\/strong>: I\/O ch\u1eadm c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1eddi gian ph\u1ea3n h\u1ed3i ch\u1eadm v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u n\u0103ng h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed3ng th\u1eddi<\/strong>: C\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn xung \u0111\u1ed9t v\u00e0 h\u1ecfng d\u1eef li\u1ec7u n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd \u0111\u00fang c\u00e1ch.<\/p>\n<\/li>\n<li>\n<p><strong>To\u00e0n v\u1eb9n d\u1eef li\u1ec7u<\/strong>: \u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba m\u1ea5t ho\u1eb7c h\u1ecfng d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, nhi\u1ec1u k\u1ef9 thu\u1eadt v\u00e0 t\u1ed1i \u01b0u h\u00f3a kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>B\u1ed9 nh\u1edb \u0111\u1ec7m<\/strong>: B\u1ed9 nh\u1edb \u0111\u1ec7m d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tr\u1ec5 I\/O.<\/p>\n<\/li>\n<li>\n<p><strong>V\u00e0o\/ra kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/strong>: Ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cho ph\u00e9p h\u1ec7 th\u1ed1ng th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 kh\u00e1c trong khi ch\u1edd ho\u00e0n th\u00e0nh I\/O.<\/p>\n<\/li>\n<li>\n<p><strong>X\u1eed l\u00fd l\u1ed7i<\/strong>: C\u01a1 ch\u1ebf x\u1eed l\u00fd v\u00e0 ph\u1ee5c h\u1ed3i l\u1ed7i m\u1ea1nh m\u1ebd gi\u00fap duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o<\/td>\n<td>\u0110\u1ec1 c\u1eadp \u0111\u1ebfn d\u1eef li\u1ec7u ho\u1eb7c l\u1ec7nh m\u00e0 h\u1ec7 th\u1ed1ng nh\u1eadn \u0111\u01b0\u1ee3c.<\/td>\n<\/tr>\n<tr>\n<td>\u0111\u1ea7u ra<\/td>\n<td>\u0110\u1ec1 c\u1eadp \u0111\u1ebfn d\u1eef li\u1ec7u ho\u1eb7c k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c g\u1eedi b\u1edfi m\u1ed9t h\u1ec7 th\u1ed1ng.<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)<\/td>\n<td>M\u00f4 h\u00ecnh truy\u1ec1n th\u00f4ng v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3 gi\u1eefa h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i.<\/td>\n<\/tr>\n<tr>\n<td>Th\u00f4ng l\u01b0\u1ee3ng<\/td>\n<td>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd ho\u1eb7c truy\u1ec1n trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh.<\/td>\n<\/tr>\n<tr>\n<td>B\u0103ng th\u00f4ng<\/td>\n<td>Kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t k\u00eanh truy\u1ec1n th\u00f4ng \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a I\/O \u0111\u1ea7y h\u1ee9a h\u1eb9n v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a c\u00f4ng ngh\u1ec7. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Giao di\u1ec7n I\/O nhanh h\u01a1n<\/strong>: Vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c giao di\u1ec7n t\u1ed1c \u0111\u1ed9 cao nh\u01b0 PCIe v\u00e0 Thunderbolt s\u1ebd cho ph\u00e9p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 nh\u1edb kh\u00f4ng bay h\u01a1i (NVM)<\/strong>: C\u00e1c c\u00f4ng ngh\u1ec7 NVM nh\u01b0 3D XPoint v\u00e0 MRAM cung c\u1ea5p c\u00e1c t\u00f9y ch\u1ecdn l\u01b0u tr\u1eef nhanh h\u01a1n v\u00e0 b\u1ec1n h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>I\/O d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y<\/strong>: \u0110i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y s\u1ebd n\u00e2ng cao h\u01a1n n\u1eefa kh\u1ea3 n\u0103ng I\/O, cho ph\u00e9p truy c\u1eadp v\u00e0 chia s\u1ebb d\u1eef li\u1ec7u li\u1ec1n m\u1ea1ch.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p IoT<\/strong>: Khi Internet of Things (IoT) ph\u00e1t tri\u1ec3n, I\/O s\u1ebd \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c k\u1ebft n\u1ed1i v\u00e0 qu\u1ea3n l\u00fd h\u00e0ng t\u1ef7 thi\u1ebft b\u1ecb.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O)<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd v\u1edbi I\/O trong b\u1ed1i c\u1ea3nh giao ti\u1ebfp m\u1ea1ng. M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch (ng\u01b0\u1eddi d\u00f9ng) v\u00e0 internet. H\u1ecd nh\u1eadn c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn t\u1eeb kh\u00e1ch h\u00e0ng, x\u1eed l\u00fd vi\u1ec7c li\u00ean l\u1ea1c v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 b\u00ean ngo\u00e0i v\u00e0 sau \u0111\u00f3 tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 cho kh\u00e1ch h\u00e0ng. Trong qu\u00e1 tr\u00ecnh n\u00e0y, m\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O li\u00ean quan \u0111\u1ebfn l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng.<\/p>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 I\/O b\u1eb1ng c\u00e1ch:<\/p>\n<ul>\n<li>\n<p>L\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m c\u00e1c t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean, gi\u1ea3m nhu c\u1ea7u th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c I\/O l\u1eb7p \u0111i l\u1eb7p l\u1ea1i.<\/p>\n<\/li>\n<li>\n<p>Qu\u1ea3n l\u00fd v\u00e0 t\u1ed1i \u01b0u h\u00f3a I\/O m\u1ea1ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<\/li>\n<li>\n<p>Cung c\u1ea5p l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung b\u1eb1ng c\u00e1ch l\u1ecdc v\u00e0 ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ebfn v\u00e0 \u0111i.<\/p>\n<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra (I\/O), b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Input\/output\" target=\"_new\" rel=\"noopener nofollow\">Wikipedia \u2013 \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra<\/a><\/li>\n<li><a href=\"https:\/\/www.geeksforgeeks.org\/input-output-i-o-basics\/\" target=\"_new\" rel=\"noopener nofollow\">GeeksforGeeks \u2013 \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra<\/a><\/li>\n<li><a href=\"https:\/\/developer.ibm.com\/technologies\/systems\/articles\/io-mechanism-os-fundamentals\/\" target=\"_new\" rel=\"noopener nofollow\">Nh\u00e0 ph\u00e1t tri\u1ec3n IBM - T\u00ecm hi\u1ec3u I\/O trong H\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468637,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477612","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Input\/Output (I\/O) - Understanding the Data Transfer Paradigm<\/mark>","faq_items":[{"question":"What is Input\/Output (I\/O)?","answer":"<p>Input\/Output (I\/O) refers to the communication and data transfer processes between a computer system and its external devices or networks. It enables interaction between users and the system and facilitates the exchange of information between hardware and software components.<\/p>"},{"question":"How did Input\/Output (I\/O) originate?","answer":"<p>The concept of I\/O dates back to the early days of computing when mainframe computers used punch cards and teletype terminals. It evolved as computers advanced, becoming a fundamental aspect of computing.<\/p>"},{"question":"How does Input\/Output (I\/O) work?","answer":"<p>I\/O involves two main processes: input and output. Input deals with data reception from external sources, while output sends data or results to external devices. It utilizes channels, buffers, interrupts, DMA, and I\/O scheduling for efficient operations.<\/p>"},{"question":"What are the key features of Input\/Output (I\/O)?","answer":"<p>The key features include bidirectionality, diversity of devices, impact on system performance, and robust error handling mechanisms.<\/p>"},{"question":"What are the types of Input\/Output (I\/O)?","answer":"<p>I\/O can be categorized into various types, such as serial, parallel, block, character, network, and memory-mapped I\/O.<\/p>"},{"question":"How is Input\/Output (I\/O) used and what are the associated problems?","answer":"<p>I\/O is used for user interaction, data storage, networking, and printing. Challenges include latency, concurrency, and data integrity. Solutions involve caching, asynchronous I\/O, and robust error handling.<\/p>"},{"question":"How does Input\/Output (I\/O) compare to similar terms?","answer":"<p>Input refers to received data or commands, while output denotes sent data or results. I\/O encompasses both aspects and is essential for data transfer.<\/p>"},{"question":"What are the future perspectives of Input\/Output (I\/O)?","answer":"<p>The future of I\/O looks promising with faster interfaces, non-volatile memory technologies, cloud-based I\/O, and integration with IoT.<\/p>"},{"question":"How are proxy servers associated with Input\/Output (I\/O)?","answer":"<p>Proxy servers act as intermediaries for network communication, managing I\/O operations related to traffic, caching, and network optimization.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477612","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\/477612\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468637"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}