Sannu.
Kusan kowane naúrar zamani (ya zama waya, kamara, kwamfutar hannu, da sauransu) yana buƙatar katin ƙwaƙwalwar ajiya (ko katin SD) don cikakken aikinsa. Yanzu a kasuwa zaku iya samun dolayen nau'in katunan ƙwaƙwalwa: ƙari, sun bambanta da nisa ba kawai a farashin da girma ba. Kuma idan kun sayi katin SD ɗin da ba daidai ba, to na'urar za ta iya aiki "da mummunar aiki" (alal misali, ba za ku sami damar yin rikodin cikakken bidiyo na HD a kan kyamara ba).
A cikin wannan labarin, Ina so in yi la'akari da duk tambayoyin da suka fi dacewa game da katunan SD da zaɓin su don na'urori daban-daban: kwamfutar hannu, kamara, kamara, waya. Ina fatan bayanin zai yi amfani ga yawan karanta shafin.
Girman katin ƙwaƙwalwar ajiya
Akwai katunan ƙwaƙwalwar ajiya a cikin girma dabam uku (duba. Siffa 1):
- - MicroSD: katin shahararren shahararre ne. Ana amfani dashi a cikin wayoyi, Allunan da sauran na'urorin šaukuwa. Katin ƙwaƙwalwar girma: 11x15mm;
- - MiniSD: nau'in katin kiɗan da aka fi sani, wanda aka samo, misali, a cikin 'yan wasan mp3, wayoyi. Girman Katin: 21.5x20mm;
- - SD: tabbas nau'in shahararrun da aka yi amfani da kyamarori, kamara, rakodi, da sauransu na'urorin. Kusan dukkanin kwamfyutocin zamani da kwamfutoci suna sanye da masu karanta katin wanda ke ba ka damar karanta irin wannan katin. Tsarin Katin: 32x24mm.
Hoto 1. Tsarin abubuwan katin SD
Mahimmin sanarwa!Duk da cewa a sayan, katin microSD (alal misali) ya haɗa da adaftar (Adafta) (duba siffa 2), ba a ba da shawarar amfani da shi maimakon katin SD na yau da kullun ba. Gaskiyar ita ce, a matsayinka na mai mulki, MicroSD yana da hankali fiye da SD, wanda ke nufin cewa an saka MicroSD a cikin kyamarar tare da adaftar ba zai bada damar yin rikodin cikakken HD bidiyo ba (misali). Sabili da haka, dole ne a zabi nau'in katin daidai da bukatun masu sana'anta na'urar wanda aka saya.
Hoto 2. adaftan MicroSD
Sauri ko aji Katin ƙwaƙwalwar SD
Kyakkyawan misali na kowane katin ƙwaƙwalwa. Gaskiyar ita ce ba kawai farashin katin ƙwaƙwalwar ajiya ya dogara da sauri ba, har ma a cikin abin da za'a iya amfani da na'urar.
Saurin akan katin ƙwaƙwalwar ajiya, mafi yawanci, ana nuna shi ta hanyar masu haɓaka (ko sanya aji katin ƙwaƙwalwar ajiya.
| Mai yawa | Sauri (MB / s) | Class |
| 6 | 0,9 | n / a |
| 13 | 2 | 2 |
| 26 | 4 | 4 |
| 32 | 4,8 | 5 |
| 40 | 6 | 6 |
| 66 | 10 | 10 |
| 100 | 15 | 15 |
| 133 | 20 | 20 |
| 150 | 22,5 | 22 |
| 200 | 30 | 30 |
| 266 | 40 | 40 |
| 300 | 45 | 45 |
| 400 | 60 | 60 |
| 600 | 90 | 90 |
Masana daban daban sunyi alamar katunan daban. Misali, a cikin fig. 3 yana nuna katin ƙwaƙwalwar ajiya tare da aji 6 - saurin sa a cikin acc. tare da tebur da ke sama, shine 6 Mb / s.
Hoto 3. Canjin SD katin aji - aji 6
Wasu masana'antun suna nuna ba aji kawai a katin ƙwaƙwalwar ba, amma har da saurin sa (duba. Hoto 4).
Hoto 4. An nuna saurin akan katin SD
Wane aji ne daidai da wanne aiki za a iya samu a tebur da ke ƙasa (Duba siffa 5).
Hoto 5. Class da manufar katunan ƙwaƙwalwa
Af, Ina jan hankali sau daya kan daki-daki. Lokacin sayen katin ƙwaƙwalwar ajiya, duba buƙatun na'urar don wane aji yake buƙata don aiki na al'ada.
Tsarin katin ƙwaƙwalwa
Akwai ƙarni huɗu na katunan 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 tarin fuka.
Sun banbanta da girma, saurin gudu, kuma sun koma baya dacewa da juna *.
Akwai mahimman lamura guda ɗaya a cikin wannan: na'urar da ke tallafawa karanta katunan SDHC za ta iya karanta duka katin SD 1.1 da SD 1.0, amma ba za su iya ganin katin SDXC ba.
Yadda za a bincika ainihin girman da aji na katin ƙwaƙwalwar ajiya
Wasu lokuta ba wani abu da aka nuna akan katin ƙwaƙwalwar ajiya, wanda ke nufin cewa ba mu gane ko ƙarar haɓaka ko mahimmin aji ba tare da gwaji ba. Akwai amfani guda ɗaya mai kyau don gwaji - H2testw.
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Harinas
Yanar gizon hukuma: //www.heise.de/download/h2testw.html
Utaramin amfani ga gwada katunan ƙwaƙwalwa. Zai zama da amfani ga masu siyarwar marasa inganci da masu kera katin ƙwaƙwalwar ajiya waɗanda ke nuna sigogi na abubuwan da suka fi ƙarfin samfuran su. Da kyau, kuma don gwajin "katunan da ba a bayyana" SD-katunan ba.
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Bayan fara gwajin, zaku ga kusan wannan taga kamar yadda yake a hoton da ke ƙasa (duba siffa 6).
Hoto 6. H2testw: rubuta saurin 14.3 MByte / s, ainihin ƙarfin katin ƙwaƙwalwar ajiya shine 8.0 GByte.
Zaɓin katin ƙwaƙwalwa don kwamfutar hannu?
Yawancin Allunan a kasuwa a yau suna tallafawa katunan ƙwaƙwalwar SDHC (har zuwa 32 GB). Tabbas, akwai allunan da ke da tallafi na SDXC, amma sun fi ƙanƙantawa kuma sun fi mahimmanci kan farashin.
Idan baku shirya harba bidiyo mai inganci (ko kuma kuna da ƙarancin kyamara), to koda katin ƙwaƙwalwar ajiyar aji na 4 zai isa ga kwamfutar hannu don aiki a kullun. Idan har yanzu kuna shirin yin rikodin bidiyo, Ina bayar da shawarar zabar katin ƙwaƙwalwar ajiya daga aji 6 zuwa 10. A matsayinka na mai mulkin, bambanci "na gaske" tsakanin aji na 16 da na 10 ba shi da mahimmanci kamar yadda ake biya akansa.
Zaɓi katin ƙwaƙwalwar ajiya don kyamara / kyamara
Anan, zaɓin katin ƙwaƙwalwa ya kamata a kusanci sosai. Gaskiyar ita ce idan kun saka kati tare da aji ƙasa da abin da kyamara ke buƙata, na'urar zata iya aiki ba tare da matsala ba kuma zaku iya mantawa game da harbin bidiyo da kyau.
Zan ba ku shawara guda ɗaya mai sauƙi (kuma mafi mahimmanci, mai 100% aiki ɗaya): buɗe shafin yanar gizo na hukuma na ƙirar kyamara, sannan umarnin don mai amfani. Ya kamata ya sami shafi: “Katunan ƙwaƙwalwar da aka ba da shawarar” (watau katunan SD waɗanda masana'antun suka tantance kansa!). An nuna misali a cikin ɓaure. 7.
Hoto 7. Daga umarnin don kyamarar nikon l15
PS
Maganar karshe: lokacin zabar katin ƙwaƙwalwar ajiya, kula da masana'anta. Ba zan nemi mafi kyawun mafi kyawun a tsakanin su ba, amma ina ba da shawarar siyan katunan ne kawai daga sanannun kwastomomi: SanDick, Transcend, Toshiba, Panasonic, Sony, da dai sauransu.
Shi ke nan, duk kyakkyawan aiki da zaɓin da ya dace. Don ƙarin abubuwa, kamar koyaushe, zan yi godiya 🙂
