Wanne katin ƙwaƙwalwar ajiya don zaɓar: wani bayyani na ɗalibai da samfurin katin SD

Sannu

Kusan kowace na'ura ta zamani (zama wayar, kyamara, kwamfutar hannu, da dai sauransu) yana buƙatar katin ƙwaƙwalwa (ko katin SD) don kammala aikinsa. Yanzu a kasuwar zaka iya samun nau'o'in ƙwaƙwalwar katin ƙwaƙwalwar ajiya: Bugu da ƙari, sun bambanta da nisa ba kawai farashin da girma ba. Kuma idan ka sayi katin SD mara kyau, to na'urar zata iya aiki "mummunan" (alal misali, baka iya rikodin cikakken hotuna bidiyon a kyamara).

A cikin wannan labarin na so in yi la'akari da dukan tambayoyin da suka fi dacewa game da katunan SD da zabi ga na'urori daban-daban: kwamfutar hannu, kyamara, kamara, waya. Ina fata bayanin zai kasance da amfani ga masu yawan masu karatu na blog.

Katin ƙwaƙwalwar ajiya

Katin ƙwaƙwalwar ajiya suna samuwa a cikin nau'i-nau'i daban-daban (duba fig. 1):

• - MicroSD: wani shahararren irin katin. Amfani da wayoyi, Allunan da sauran na'urori masu ɗaukan hoto. Katin ƙwaƙwalwa katin: 11x15mm;
• - MiniSD: ƙananan nau'in katin, wanda aka samo, alal misali, a cikin 'yan wasan kiɗa, wayoyin. Taswirar Map: 21,5x20mm;
• - SD: watakila mafi yawan masarufi, da aka yi amfani dashi a kyamarori, kamanni, rikodi da wasu na'urori. Kusan dukkan kwamfutar tafi-da-gidanka da kwamfyutocin zamani suna sanye da masu karatu na katin, suna ba ka damar karanta irin wannan katin. Girman taswira: 32x24mm.

Fig. 1. Form dalilai na katin SD

Alamar mahimmanci!Duk da cewa idan sayen, katin microSD (alal misali) ya zo tare da adaftan (Adawa) (duba Figure 2), ba'a da shawarar yin amfani dashi maimakon katin SD na yau da kullum. Gaskiyar ita ce, a matsayin mai mulki, MicroSDs suna da hankali fiye da SD, wanda ke nufin cewa microSD sanya a cikin camcorder ta amfani da adaftan ba zai ƙyale rikodin cikakken HD bidiyo (alal misali). Sabili da haka, dole ne ka zaɓi nau'in katin daidai bisa ga buƙatar mai sana'a na na'urar da aka saya.

Fig. 2. Adaftar MicroSD

Speed ​​of ko aji Katin ƙwaƙwalwa na SD

Matsayi mai mahimmanci na kowane katin ƙwaƙwalwa. Gaskiyar ita ce gudun ya dogara ba kawai akan farashin katin ƙwaƙwalwar ajiya ba, har ma a kan na'urar da za'a iya amfani dasu.

An sau da sauri a katin ƙwaƙwalwar ajiya a matsayin mahaɗi (ko saita ɗakin katin ƙwaƙwalwar ajiya.) Ta hanyar, mahalarta da katin ƙwaƙwalwar ajiyar suna "haɗe" da juna, ga tebur da ke ƙasa).

Masana'antu daban-daban suna nuna katin su daban. Alal misali, a cikin fig. 3 yana nuna katin ƙwaƙwalwar ajiya tare da aji na 6 - ta gudun a acc. tare da tebur a sama, daidai da 6 MB / s.

Fig. 3. Tsarin SD Class - aji na 6

Wasu masana'antun suna nuna ba kawai ajin a katin ƙwaƙwalwar ajiya ba, amma har da gudun (duba siffa 4).

Fig. 4. Ana nuna gudun a kan katin SD.

Wadanne nau'in taswirar ya dace da aikin - zaka iya gano daga tebur da ke ƙasa (duba siffa 5).

Fig. 5. Tsarin da manufar katin ƙwaƙwalwa

By hanyar, Na sake mayar da hankali ga daki daya. Lokacin sayen katin žwažwalwar ajiya, duba cikin bukatun na'urar, wace takarda tana buƙatar aiki na al'ada.

Ƙungiyar Memory Card

Akwai ƙananan ƙwaƙwalwar ƙwaƙwalwar ajiya:

• SD 1.0 - daga 8 MB zuwa 2 GB;
• SD 1.1 - har zuwa 4 GB;
• SDHC - har zuwa 32 GB;
• SDXC - har zuwa 2 TB.

Sun bambanta da girma, gudun aiki, yayin da suke baya da juna tare da juna *.

Akwai muhimmiyar mahimmanci: na'urar tana goyon bayan karatun katin SDHC, yana iya karanta katin SD 1.1 da SD 1.0, amma ba zai iya ganin katin SDXC ba.

Yadda za a duba ainihin girman da aji na katin ƙwaƙwalwa

Wani lokaci babu abin da aka nuna akan katin ƙwaƙwalwar ajiya, wanda ke nufin cewa ba za mu gane ko dai ainihin ainihin ko ainihin ainihin ba tare da gwaji ba. Don gwaji akwai mai amfani mai kyau - H2testw.

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H2testw

Shafin yanar gizo: //www.heise.de/download/h2testw.html

Ƙananan mai amfani don gwada katunan ƙwaƙwalwa. Zai kasance da amfani ga masu sayarwa marasa kirki da masu ƙera katin ƙwaƙwalwar ajiya, suna nuna alamun waɗanda suka samo asali daga samfurori. Har ila yau, don gwada "katunan SD" marasa tabbacin.

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Bayan fara gwajin, zaku gani game da wannan taga kamar a hoton da ke ƙasa (duba siffa 6).

Fig. 6. H2testw: rubuta gudun 14.3 MByte / s, ainihin adadin katin ƙwaƙwalwar ajiya shine 8.0 GByte.

Zaɓin katin ƙwaƙwalwa don kwamfutar hannu?

Mafi yawan Allunan a kasuwar yau suna tallafa wa katin SDHC katin ƙwaƙwalwa (har zuwa 32 GB). Akwai, ba shakka, Allunan da kuma goyon baya ga SDXC, amma suna da yawa kuma sun fi tsada.

Idan ba ku shirya bidiyo bidiyo a high quality (ko kana da ƙananan kamara kamara), to, koda katin ƙwaƙwalwar ajiya na 4th zai isa ga kwamfutar hannu don aiki yadda ya dace. Idan har yanzu kuna shirin yin rikodin bidiyo, ina bada shawara zaɓar wani katin ƙwaƙwalwar ajiya daga aji 6 zuwa 10. A matsayinka na mulkin, bambancin "ainihin" a tsakanin kundin 16th da 10th bai kasance da muhimmanci ba game da biyan kuɗi don shi.

Zaɓin katin ƙwaƙwalwa don kyamara / kamara

A nan, zaɓin katin ƙwaƙwalwar ajiya ya kamata a kusantar da hankali sosai. Gaskiyar ita ce idan kun saka katin a cikin wani ƙananan ƙananan kamara yana buƙatar - na'urar zata iya zama maras tabbas kuma zaka iya manta game da bidiyo mai kyau a cikin ingancin mai kyau.

Zan ba ku shawara mai sauki guda ɗaya (kuma mafi mahimmanci, 100% aiki): bude shafin yanar gizon na mai daukar hoto, sannan bi umarnin don mai amfani. Ya kamata a sami shafi: "Katin ƙwaƙwalwar ajiyar shawarar" (wato, katin SD wanda mai yin sana'a ya bincika kansa!). An nuna misali a cikin siffa. 7

Fig. 7. Daga umarnin zuwa kamara nikon l15

PS

Ƙarshen ƙarshe: yayin zabar katin ƙwaƙwalwa, kula da masu sana'a. Ba zan nemi mafi kyawun mafi kyau daga cikinsu ba, amma na bada shawarar katunan sayen kaya kawai sanannun: SanDick, Transcend, Toshiba, Panasonic, Sony, da dai sauransu.

Hakanan, duk aikin ci gaba da kuma zabi mai kyau. Don kari, kamar yadda kullum, zan gode 🙂