Yadda za a fassara bytes cikin megabytes da kuma mayar da?

Yau rayuwarmu wuya su yi tunanin ba tare da kwakwalwa. Suna samuwa a ko'ina. The kalmar "bit", "byte", "megabytes" sun zama wani bangare na rayuwar mu. Talakawa mutane sukan yi amfani da su ba tare da sanin abin da suke nufi da kuma yadda za nasaba da juna.

Ragowa, kilobits ...

Akwai wani tsohon magana,. Mene ne bambanci tsakanin wani al'ada mutum da kwamfuta gwani? A farko tabbatar da cewa daya kilobyte 1000 bytes, da kuma na biyu - a kilogram - 1024 grams. Kuma al'ada mutane sau da yawa tambaya, da kuma abin da, a gaskiya, a wargi. To, za mu fahimci inda ƙafãfunsu girma, da kuma gano yadda za a fassara bytes a megabytes ko a cikin wasu mahara raka'a.

Bit - da karami naúrar na binary bayanai. More daidai, ta yawa. Wannan yana nufin bayanai game da daya daga cikin jihohi biyu daga cikin abu. Alal misali, wata alama / babu sigina, gaskiya / ƙarya, 1/0, da sauransu. G. Daga cikin Turanci sunan auku rage guda biyu nary digi t ( "binary") = bit. Kuma "bit" yana nufin wanda lambobi na binary code. A wannan yanayin, a gidan goma lambobi da aka wakilta a matsayin mai sifili ko daya, misali kamar yadda aka nuna a tebur. Wannan shi ake kira a "binary tsarin na numeration."

Kamar yadda za a iya gani, da lambobin 0 da 1 da wannan misali da gidan goma deuce yana da biyu ragowa - 10. Kuma a cikin takwas - hudu (1000).

Kuma abin da yake kilobits?

A mafi tartsatsi amfani da wannan lambar tsarin samu a kwamfuta fasaha. A musamman, da binary lambobi amfani ga yawan dijital tunanin.

Ga wani misali. Yawan duk yiwu adiresoshin a kan adireshin bas ne daidai da wani yawan biyu a wasu har N. Ko in ba haka ba - 2 ^N. A nan, N suturta da yawan ragowa da bas. Me muka gani? Yawan Kwayoyin a ƙwaƙwalwar guntu ne, sunã daidaita da daya ko wani mataki na 2. Kuma a sa'an nan - ko da mafi ban sha'awa. Number 2 ¹⁰ = 1024 ne sosai a kusa da 1000. A daidai wannan lokaci, dubban amfani da dalilin da gidan goma kari kafin kalma. Saboda haka, 1024 ragowa da aka kira "kilobits". By misalin da kilo gram ko kilo mita. Na tuna da magana, da, da aka nuna a sama.

Bytes da ragowa

Na kimiyyar kwamfuta da aka sani kamar haka. "Bytes" (Eng. Byte) aka kira wani ajiya naúrar, da kuma aiki da dijital bayanai. Yana wakiltar yawan ragowa lokaci guda sarrafa kwamfuta. Yana da wani classic.

Modern kwamfuta tsarin amfani da byte kunshi 8 ragowa. Saboda haka, zai iya ɗaukan 256 (2 ⁸⁾ daban-daban dabi'u.

To maida bytes zuwa megabytes, kawai aiki. Ilmin lissafi na uku aji: 1 kilobyte = 1024 bytes. Ka tuna game Fabrairu ^10? A 1 MB = 1024 KB (m. E. 2 ^{@ 20} = ^2x10 2) = 1048576 bytes.

aikace-aikace

Mafi sau da yawa, da bytes amfani da kwamfuta tsarin, da kuma ragowa - a watsa bayanai networks. Kullum, domin gudu ji.

Ga wani misali. Ethernet cibiyar sadarwa na samar da wani data kudi a cikin kewayon 10 Mbit / s zuwa 1 Gb / s. More kamata a lura da cewa, a matsayin mai mulkin, bytes denoted da harafin "B" (ko Latin «B»). "Bit" da kuma rubuce. A prefix "kilo" da aka nuna ta "K" harafi. Yana da wani babban birnin kasar maimakon Ƙaramin baki. A kananan "k" da aka rubuta da sunan gidan goma prefix "kilo", watau Maris ¹⁰ = 1000. Yanzu la'akari a more daki-daki da wadannan tambaya.

Binary da kuma gidan goma kari kafin kalma

Yadda za a fassara bytes cikin megabytes, fiye ko žasa bayyananne. A farkon 1999, da sanannun kungiyar IEC (International Electrotechnical Hukumar) sa a cikin wurare dabam dabam binary prefix ta samar da mahara raka'a na adadin bayanai. Dalilin wannan kuwa shi ne kusanci lambobin 1024 da kuma 1000. Hakazalika, al'ada gidan goma kari kafin kalma amfani da SI tsarin, binary bambanta kawai ta maye gurbin na karshe syllable a "guda biyu" (daga Latin binarius - binary). Ga alama kamar yadda aka nuna a tebur a kasa.

A misali soma da kasashe da dama, amma ya shiga sunayen aka yi amfani da kasa akai-akai, yafi a rubuce da kuma baki - kusan ba. Yadda za a sami saboda da cacophony. Watakila haka. Za ka yarda da cewa kilobits sauti nicer fiye da kibibit da megabytes mafi alhẽri daga mebibytes.

Fassarawa bytes cikin megabytes bayyananne. Amma dai ba duka. Ya zuwa yanzu, akwai biyu hanyoyin da samuwar, sau info. Wannan tambaya ko karin m ne yadda mutane da yawa suke a cikin 1 megabyte na bytes.

A farko m

.. A da shi da prefix "kilo," "mega," da dai sauransu suna amfani da wani binary ga wadannan lokuta:

• Mai sarrafa fayil kuma sauran software a rage tsawon file size saitin. Alal misali, shirin rahoton cewa rikodin size ne 10 MB. A classic hanyar canja wurin bytes a megabytes, la'akari da girman abin da yake daidai 10485760 bytes. Fayil manajoji 'yan aukuwa gana da misali dimensioning - ta amfani da rage tsawon nau'i na binary kari kafin kalma, irin MiB (MiB).
• Masana'antun bazuwar damar žwažwalwar ajiya, flash memory cards, video memory.
• CD-ROM girma ne ba kawai a binary megabytes.

Na biyu m

A nan Consoles ake amfani da matsayin gidan goma a cikin wadannan lokuta:

• Hard kuma Tantancewar tafiyarwa. Su girma gubar a cikin gidan goma megabytes. Togiya: CD, wanda damar ta nuna binary.
• Na wasa sadarwa. A wannan yanayin, da dabi'u na wajen taso keya. Alal misali, ƙarar na game da miliyan 10 bytes na fayil za a iya ce da shi "weighs" 10 megabytes. Abin da muke gani a nan? A wannan yanayin, da bytes a megabytes canjawa wuri ba duka daidai, amma sadarwa yana faruwa.
• Nadi na sadarwa dangane gudun. Alal misali, sama da 100BASE-CA misali. A da shi 100 Mbit / s data kudi yayi dace da daidai miliyan 100 ragowa / s. Bari mu dubi wani karin "nimble" fili tare da wata 10 Gbit / s (10GBASE-X misali). Yana yayi dace da daidai biliyan 10 ragowa / s. Wannan shi. Kuma ba a bit fiye ko žasa.

Amma tare da uku-inch floppy woje 1,44 MB (tuna da waɗanda?) Ya fi ban sha'awa. Ƙãruwa aka nuna a cikin binary-masu lamba gidan goma megabytes. Yana da aka shirya kamar haka. Wata irin wannan "megabytes" ya KiB ne 1000, wanda shi ne kamar 0,977 MiB, amma a lokaci guda 1 KiB daidaita 1024 bytes.

Ya kamata a lura da cewa akwai bambanci tsakanin wadannan biyu zabin biyayya Consoles. Duk da yake a cikin akwati Kilobytes shi ba ya wuce 2.4%, sa'an nan a megabyte riga 4.9% zuwa GB - 7.4%, kuma domin terabyte - kusan 10%. Hakika, ba a cikin ni'imar da binary misali. E. "sata" mu masana'antun bytes. Alal misali, sayen wani rumbun kwamfutarka damar 1 tarin fuka. Kamar yadda mutum wanda ya yi karatu kwamfuta kimiyya, ku piously yi imani da cewa akwai 1099511627776 bytes. Kuma ya jũya daga - "kawai" 1000000000000. Wancan ne, ku yi "cije ni kashe" fiye da 99,5 biliyan bytes (kamar 98 GB). A yawa ko kadan? Wajen - daga 40 zuwa 200 cikakken tsawon fina-finai, dangane da format. Babu wani abu da ya ce game da abin da? E., As rubuta a sama, ta goma.