Dab tsi tau yog dab tsi yuav yog;
thiab tej uas tau ua lawm yuav tau ua,
thiab tsis muaj dab tsi tshiab nyob rau hauv lub hnub.
Phau Ntawv Nkauj 1:9
Txoj kev txawj ntse nyob mus ib txhis uas muaj nyob rau hauv epigraph muaj feem xyuam rau yuav luag txhua qhov kev lag luam, suav nrog kev hloov pauv sai sai li IT. Qhov tseeb, nws hloov tawm tias ntau qhov kev paub uas tsuas yog tam sim no pib tham txog yog raws li kev tsim khoom tsim tau ntau xyoo dhau los thiab txawm tias ua tiav (lossis tsis ua tiav) siv hauv cov neeg siv khoom lossis hauv B2B sphere. Qhov no kuj siv tau rau qhov zoo li tshiab-fangled sib xws li mobile gadgets thiab portable cia xov xwm, uas peb yuav tham nyob rau hauv kom meej nyob rau hauv niaj hnub cov ntaub ntawv.
Koj tsis tas yuav saib deb rau cov piv txwv. Siv tib lub xov tooj ntawm tes. Yog tias koj xav tias thawj "ntse" ntaus ntawv uas tsis muaj cov keyboard kiag li yog lub iPhone, uas tsuas yog tshwm sim hauv xyoo 2007, ces koj ua yuam kev loj heev. Lub tswv yim ntawm kev tsim ib lub smartphone tiag tiag, sib txuas cov cuab yeej sib txuas lus thiab lub peev xwm ntawm PDA hauv ib rooj plaub, tsis yog rau Apple, tab sis rau IBM, thiab thawj cov cuab yeej zoo li no tau nthuav tawm rau pej xeem thaum Lub Kaum Ib Hlis 23. , 1992 ua ib feem ntawm COMDEX exhibition ntawm kev ua tiav hauv kev lag luam kev sib txuas lus, tuav hauv Las Vegas , thiab qhov txuj ci tseem ceeb ntawm thev naus laus zis tau nkag mus rau ntau lawm hauv 1994.
IBM Simon Personal Communicator - lub ntiaj teb thawj touchscreen smartphone
IBM Simon tus kheej kev sib txuas lus yog thawj lub xov tooj ntawm tes uas yeej tsis muaj cov keyboard, thiab cov ntaub ntawv tau nkag tsuas yog siv lub vijtsam kov. Nyob rau tib lub sijhawm, lub gadget ua ke nrog kev ua haujlwm ntawm lub koom haum, tso cai rau koj xa thiab txais faxes, nrog rau kev ua haujlwm nrog e-mail. Yog tias tsim nyog, IBM Simon tuaj yeem txuas nrog tus kheej lub khoos phis tawj rau kev sib pauv ntaub ntawv lossis siv los ua lub modem nrog kev ua haujlwm ntawm 2400 bps. Los ntawm txoj kev, nkag mus rau cov ntaub ntawv sau tau siv nyob rau hauv ib txoj kev ingenious: tus tswv muaj kev xaiv ntawm ib tug me me QWERTY keyboard, uas, muab cov zaub loj ntawm 4,7 nti thiab ib tug daws teeb meem ntawm 160x293 pixels, tsis yog tshwj xeeb yog yooj yim mus siv, thiab PredictaKey intelligent assistant. Cov tom kawg tso tawm tsuas yog 6 tus cim tom ntej, uas, raws li kev kwv yees algorithm, tuaj yeem siv nrog qhov tshwm sim loj tshaj plaws.
Qhov zoo tshaj plaws epithet uas tuaj yeem siv los ua tus yam ntxwv IBM Simon yog "ua ntej ntawm nws lub sijhawm," uas thaum kawg txiav txim siab ua tiav fiasco ntawm cov cuab yeej no ntawm kev ua lag luam. Ntawm qhov tod tes, lub sijhawm ntawd tsis muaj cov thev naus laus zis uas muaj peev xwm ua kom cov neeg sib txuas lus yooj yim: ob peb tus neeg xav nqa ib ncig ntawm lub cuab yeej ntsuas 200x64x38 hli thiab hnyav 623 grams (thiab ua ke nrog lub chaw them nqi - ntau dua 1 kg), Lub roj teeb tsuas yog siv sijhawm li 1 teev hauv kev sib tham thiab 12 teev hauv hom standby. Ntawm qhov tod tes, tus nqi yog: $ 899 nrog daim ntawv cog lus los ntawm tus neeg teb xov tooj ntawm tes BellSouth, uas tau dhau los ua tus neeg koom tes ntawm IBM hauv Asmeskas, thiab tshaj $ 1000 yam tsis muaj nws. Tsis tas li ntawd, tsis txhob hnov ββββqab txog lub sijhawm (lossis txawm tias qhov xav tau) los yuav lub roj teeb ntau dua - "tsuas yog" rau $ 78.
Pom kev sib piv ntawm IBM Simon, niaj hnub smartphones thiab fir cone
Nrog rau cov khoom cia sab nraud, cov khoom kuj tsis yooj yim. Raws li Hamburg tus account, kev tsim cov khoom siv thawj zaug tuaj yeem raug ntaus nqi rau IBM. Thaum Lub Kaum Hli 11, 1962, lub tuam txhab tshaj tawm cov kev hloov pauv ntawm IBM 1311 cov ntaub ntawv khaws cia. Qhov tseem ceeb ntawm cov khoom tshiab yog kev siv cov cartridges hloov tau, txhua qhov muaj rau 14-nti sib nqus daim hlau. Txawm hais tias tus tsav tshem tau no hnyav 4,5 kilograms, nws tseem yog ib qho tseem ceeb ua tau zoo, txij li thaum tsawg kawg nws muaj peev xwm hloov cov cartridges thaum puv thiab hloov lawv ntawm kev teeb tsa, txhua qhov loj ntawm lub hauv siab ntawm cov tub rau khoom.
IBM 1311 - cov ntaub ntawv khaws cia nrog cov hard drive tshem tau
Tab sis txawm rau qhov kev txav mus los no peb yuav tsum tau them nyiaj raws li kev ua tau zoo thiab muaj peev xwm. Ua ntej, txhawm rau tiv thaiv cov ntaub ntawv kev puas tsuaj, sab nrauv ntawm 1st thiab 6th daim hlau raug stripped ntawm cov hlau nplaum, thiab lawv kuj ua haujlwm tiv thaiv. Txij li tam sim no tsuas yog 10 lub dav hlau tau siv rau kev sau cia, tag nrho lub peev xwm ntawm qhov tshem tawm tau yog 2,6 megabytes, uas nyob rau lub sijhawm ntawd tseem muaj ntau heev: ib daim cartridge tau hloov pauv β ntawm tus qauv reel ntawm magnetic film lossis 25 txhiab punched phaib, thaum. muab random nkag mus rau cov ntaub ntawv.
Qhov thib ob, tus nqi rau kev txav mus los yog qhov txo qis hauv kev ua haujlwm: qhov spindle ceev yuav tsum tau txo mus rau 1500 rpm, thiab vim li ntawd, lub sijhawm nruab nrab ntawm kev nkag mus rau lub sijhawm nce mus rau 250 milliseconds. Rau kev sib piv, tus thawj ntawm cov cuab yeej no, IBM 1301, muaj qhov nrawm nrawm ntawm 1800 rpm thiab lub sijhawm nkag mus rau 180 ms. Txawm li cas los xij, nws tau ua tsaug rau kev siv lub zog tshem tawm uas IBM 1311 tau dhau los ua neeg nyiam heev hauv kev lag luam ib puag ncig, txij li qhov kev tsim no thaum kawg ua rau nws muaj peev xwm txo tau tus nqi khaws cia ib chav tsev ntawm cov ntaub ntawv, ua kom nws tuaj yeem txo tus lej. ntawm kev yuav khoom siv thiab thaj chaw uas yuav tsum tau ua kom haum rau lawv. Ua tsaug rau qhov no, cov cuab yeej tau dhau los ua ib qho ntawm cov neeg nyob ntev tshaj plaws los ntawm cov qauv ntawm lub khw muag khoom kho vajtse thiab tau txiav tawm hauv xyoo 1975 nkaus xwb.
Tus neeg ua tiav rau IBM 1311, uas tau txais qhov Performance index 3340, yog qhov tshwm sim ntawm kev txhim kho cov tswv yim sib koom ua ke los ntawm cov tuam txhab engineers rau hauv kev tsim cov qauv yav dhau los. Cov ntaub ntawv khaws cia tshiab tau txais cov ntawv ntim tag nrho, vim tias nws muaj peev xwm ua tau, ntawm ib sab, kom tsis txhob cuam tshuam ntawm ib puag ncig yam ntawm cov hlau nplaum, ua rau lawv muaj kev ntseeg siab, thiab tib lub sijhawm txhim kho aerodynamics hauv cov cassettes. Daim duab tau ua tiav los ntawm microcontroller lub luag haujlwm rau kev txav lub taub hau sib nqus, qhov muaj qhov ua rau nws muaj peev xwm ua kom qhov tseeb ntawm lawv qhov chaw.
IBM 3340, npe hu ua Winchester
Raws li qhov tshwm sim, lub peev xwm ntawm txhua daim cartridge tau nce mus rau 30 megabytes, thiab lub sijhawm nkag mus rau sector tau txo qis raws nraim 10 zaug - rau 25 milliseconds. Nyob rau tib lub sijhawm, cov ntaub ntawv hloov ceev tau mus txog cov ntaub ntawv rau lub sijhawm ntawd ntawm 885 kilobytes ib ob. Los ntawm txoj kev, nws tau ua tsaug rau IBM 3340 uas cov lus "Winchester" tau los siv. Qhov tseeb yog tias cov cuab yeej tau tsim los rau kev ua haujlwm ib txhij nrog ob lub tshuab tshem tawm, uas yog vim li cas nws tau txais qhov ntsuas ntxiv "30-30". Lub ntiaj teb nto moo Winchester phom muaj qhov ntsuas tib yam, nrog qhov sib txawv tsuas yog tias yog thawj zaug peb tau tham txog ob lub disks nrog lub peev xwm ntawm 30 MB, tom qab ntawd hauv qhov thib ob - txog cov mos txwv caliber (0,3 ntiv tes) thiab qhov hnyav ntawm rab phom hauv cov tshuaj ntsiav (30 nplej, uas yog, txog 1,94 grams).
Floppy Disk - tus qauv ntawm niaj hnub sab nraud tsav
Txawm hais tias nws yog cov cartridges rau IBM 1311 uas tuaj yeem suav hais tias yog cov yawm txiv ntawm cov neeg siv khoom niaj hnub sab nraud, cov khoom siv no tseem nyob deb li deb ntawm cov neeg siv khoom lag luam. Tab sis txhawm rau txuas ntxiv tsev neeg tsob ntoo ntawm cov xov xwm txawb xov tooj, koj yuav tsum xub txiav txim siab txog cov txheej txheem xaiv. Pom tseeb, cov ntawv xuas nrig yuav raug tso tseg, txij li lawv yog cov thev naus laus zis ntawm "pre-disk" era. Nws kuj tsis tsim nyog xav txog kev tsav tsheb raws li cov ntaub nplaum sib nqus: txawm hais tias cov ntaub ntawv raug cai muaj xws li kev txav mus los, nws qhov kev ua tau zoo tsis tuaj yeem muab piv nrog rau thawj cov piv txwv ntawm cov tsav nyuaj rau qhov yooj yim vim li cas daim kab xev sib nqus tsuas yog nkag mus rau cov ntaub ntawv kaw tseg. cov ntaub ntawv. Yog li, "soft" drives yog ze tshaj rau hard drives raws li cov neeg siv khoom. Thiab nws muaj tseeb: floppy disks yog cov compact, tab sis, zoo li hard drives, lawv muaj peev xwm tiv taus rov sau dua thiab muaj peev xwm ua hauj lwm nyob rau hauv random nyeem hom. Cia peb pib nrog lawv.
Yog tias koj cia siab tias yuav pom peb tsab ntawv muaj txiaj ntsig dua, ces ... koj hais yog lawm. Tom qab tag nrho, nws yog nyob rau hauv IBM lub chaw soj nstuam uas Alan Shugart cov kev tshawb fawb pab pawg tab tom nrhiav kev hloov tsim nyog rau cov hlau nplaum nplaum, uas yog qhov zoo rau kev khaws cov ntaub ntawv, tab sis tsis zoo rau cov hard drives hauv cov haujlwm niaj hnub. Ib qho kev daws teeb meem tsim nyog tau thov los ntawm tus kws tshaj lij laus David Noble, uas tau koom nrog pab pawg, thiab hauv xyoo 1967 nws tau tsim cov hlau nplaum uas tshem tau nrog cov ntaub thaiv npog, uas tau ua haujlwm siv lub disk tshwj xeeb. Plaub xyoos tom qab ntawd, IBM tau qhia lub ntiaj teb thawj zaug floppy disk, uas muaj peev xwm ntawm 4 kilobytes thiab ib txoj kab uas hla ntawm 80 ntiv tes, thiab twb nyob rau hauv 8 lub thib ob tiam ntawm floppy disks tau tso tawm, lub peev xwm ntawm uas twb yog 1972 kilobytes.
IBM 8-nti floppy disk nrog lub peev xwm ntawm 128 kilobytes
Nyob rau hauv lub wake ntawm kev vam meej ntawm floppy disks, twb nyob rau hauv 1973, Alan Shugart txiav txim siab tawm hauv lub koom haum thiab nrhiav tau nws tus kheej lub tuam txhab, hu ua Shugart Associates. Lub tuam txhab tshiab tau pib txhim kho floppy drives ntxiv: hauv xyoo 1976, lub tuam txhab tau tshaj tawm 5,25-nti compact floppy disks thiab thawj floppy drives, uas tau txais kev hloov kho tshiab thiab kev sib txuas. Tus nqi ntawm Shugart SA-400 mini-floppy thaum pib ntawm kev muag khoom yog $ 390 rau tus tsav nws tus kheej thiab $ 45 rau ib txheej ntawm kaum floppy disks. Hauv tag nrho cov keeb kwm ntawm lub tuam txhab, nws yog SA-400 uas tau los ua cov khoom lag luam zoo tshaj plaws: tus nqi xa khoom ntawm cov khoom siv tshiab tau mus txog 4000 units ib hnub, thiab maj mam 5,25-nti floppy disks yuam tawm lawv cov khoom loj yim-nti los ntawm lub khw.
Txawm li cas los xij, Alan Shugart lub tuam txhab tsis muaj peev xwm ua lag luam tau ntev: twb nyob rau xyoo 1981, Sony tau siv rab chais, qhia txog qhov me me floppy disk, txoj kab uas hla tsuas yog 90 hli, lossis 3,5 ntiv tes. Thawj lub PC siv lub built-in disk drive ntawm hom tshiab yog HP-150, tso tawm los ntawm Hewlett-Packard xyoo 1984.
Thawj tus kheej lub computer nrog 3,5-nti disk tsav Hewlett-Packard HP-150
Sony's floppy disk tau dhau los ua qhov kev vam meej uas nws hloov pauv tag nrho lwm cov kev daws teeb meem hauv kev ua lag luam, thiab daim ntawv foos nws tus kheej tau siv sijhawm li 30 xyoo: kev tsim khoom loj ntawm 3,5-nti floppy disks xaus rau xyoo 2010 nkaus xwb. Qhov nrov ntawm cov khoom tshiab yog vim muaj ntau yam:
- ib lub rooj plaub yas tawv thiab zawv zawg hlau flap muab kev tiv thaiv kev ruaj ntseg rau lub disk nws tus kheej;
- vim muaj lub tes tsho hlau nrog lub qhov kom raug qhov chaw, tsis tas yuav tsum tau ua ib lub qhov ncaj qha rau hauv cov hlau nplaum disk, uas kuj muaj txiaj ntsig zoo rau nws txoj kev nyab xeeb;
- siv cov zawv zawg hloov, kev tiv thaiv overwrite tau siv (yav dhau los, txhawm rau txhawm rau txhawm rau rov ua dua, kev tswj kev txiav tawm ntawm lub floppy disk yuav tsum tau muab kaw nrog daim kab xev).
Timeless classic - Sony 3,5-nti floppy disk
Nrog rau compactness, 3,5-nti floppy disks kuj muaj peev xwm ntau dua piv rau lawv cov neeg ua ntej. Yog li, qhov siab tshaj plaws 5,25-nti high-density floppy disks, uas tau tshwm sim hauv xyoo 1984, muaj 1200 kilobytes ntawm cov ntaub ntawv. Txawm hais tias thawj 3,5-nti cov qauv muaj peev xwm ntawm 720 KB thiab nyob rau hauv qhov no hais txog zoo tib yam rau 5-nti plaub-ntiv tes ntom nti floppy disks, twb nyob rau hauv 1987 high-density 1,44 MB floppy disks tshwm sim, thiab nyob rau hauv 1991 - txuas ntxiv ceev floppy disks, haum 2,88 MB ntawm cov ntaub ntawv.
Qee lub tuam txhab tau sim tsim cov ntawv me me me (piv txwv li, Amstrad tsim 3-nti floppy disks uas tau siv hauv ZX Spectrum +3, thiab Canon tsim 2-nti tshwj xeeb floppy disks rau kaw thiab khaws cov yeeb yaj kiab sib xyaw), tab sis lawv yeej tsis ntes tau. Tab sis cov khoom siv sab nraud tau pib tshwm sim hauv kev ua lag luam, uas tau muaj kev xav ntau ze rau cov tsav sab nraud niaj hnub no.
Iomega's Bernoulli lub thawv thiab qhov tsis zoo "tuag clicks"
Txawm li cas los xij ib tug yuav hais, ntim ntawm floppy disks me me dhau los khaws cov ntaub ntawv loj txaus: los ntawm cov qauv niaj hnub no lawv tuaj yeem muab piv nrog rau theem pib flash drives. Tab sis dab tsi, nyob rau hauv cov ntaub ntawv no, yuav hu ua ib tug analogue ntawm ib tug sab nraud hard drive los yog solid-state drive? Cov khoom siv Iomega yog qhov zoo tshaj plaws rau lub luag haujlwm no.
Lawv thawj lub cuab yeej, tau tshaj tawm xyoo 1982, yog lub npe hu ua Bernoulli Box. Txawm hais tias muaj peev xwm loj rau lub sijhawm ntawd (thawj lub drives muaj peev xwm ntawm 5, 10 thiab 20 MB), cov cuab yeej qub tsis nrov vim, tsis muaj exaggeration, nws qhov loj me: "floppy disks" los ntawm Iomega muaj qhov ntev ntawm 21 los ntawm 27,5 cm, uas zoo tib yam rau ib daim ntawv ntawm A4 daim ntawv.
Qhov no yog qhov qub cartridges rau lub thawv Bernoulli zoo li
Lub tuam txhab cov cuab yeej tau txais txiaj ntsig txij li Bernoulli Box II. Qhov ntev ntawm cov tsav tau raug txo qis: lawv twb muaj qhov ntev ntawm 14 cm thiab dav ntawm 13,6 cm (uas yog piv rau cov qauv 5,25-nti floppy disks, yog tias koj tsis suav nrog qhov tuab ntawm 0,9 cm), thaum featuring ib tug ntau impressive peev xwm: los ntawm 20 MB rau nkag-kab qauv mus rau 230 MB rau drives uas mus muag nyob rau hauv 1993. Cov khoom siv zoo li no muaj nyob rau hauv ob hom: raws li cov khoom siv sab hauv rau PCs (ua tsaug rau lawv qhov txo qis, lawv tuaj yeem muab tso rau hauv qhov chaw ntawm 5,25-nti floppy disk nyeem) thiab cov khoom siv sab nraud txuas nrog lub computer ntawm SCSI interface.
Ob tiam Bernoulli lub thawv
Cov neeg ua tiav ncaj qha ntawm Bernoulli lub thawv yog Iomega ZIP, qhia los ntawm lub tuam txhab hauv xyoo 1994. Lawv qhov kev nrov nrov tau txhawb nqa zoo los ntawm kev koom tes nrog Dell thiab Apple, uas tau pib txhim kho ZIP drives hauv lawv lub computer. Thawj tus qauv, ZIP-100, siv tsav nrog lub peev xwm ntawm 100 bytes (kwv yees 663 MB), khav theeb cov ntaub ntawv hloov pauv ceev ntawm li 296 MB / s thiab lub sijhawm nkag mus tsis pub dhau 96 milliseconds, thiab cov tsav sab nraud tuaj yeem yog txuas nrog lub PC ntawm LPT lossis SCSI. Ib me ntsis tom qab, ZIP-1 nrog lub peev xwm ntawm 28 bytes (250 MB) tau tshwm sim, thiab thaum kawg ntawm cov koob - ZIP-250, uas rov qab tau tshaj ZIP-640 tsav thiab txhawb kev ua haujlwm nrog ZIP-384 hauv hom qub ( los ntawm outdated drives nws tsuas yog tau nyeem cov ntaub ntawv). Los ntawm txoj kev, sab nraud flagships txawm tswj tau txais kev txhawb nqa rau USB 239 thiab FireWire.
Iomega ZIP-100 sab nraud tsav
Nrog rau qhov tshwm sim ntawm CD-R / RW, Iomega cov kev tsim tawm ib txwm poob rau hauv kev tsis txaus ntseeg - kev muag khoom ntawm cov khoom siv tau pib poob qis, tau poob yuav luag plaub npaug los ntawm 2003, thiab twb tau ploj mus lawm hauv 2007 (txawm hais tias cov khoom lag luam tawm tsuas yog hauv 2010). Tej yam yuav tau hloov pauv yog tias ZIP tsis muaj qee yam teeb meem kev ntseeg siab.
Qhov tshaj plaws yog tias cov cuab yeej ua tau zoo, zoo siab rau cov xyoo ntawd, tau lees paub los ntawm cov ntaub ntawv RPM: lub floppy disk tig ntawm qhov ceev ntawm 3000 rpm! Tej zaum koj twb tau twv tias yog vim li cas thawj cov cuab yeej hu ua tsis muaj dab tsi tsawg dua li lub thawv Bernoulli: vim qhov kev sib hloov ceev ntawm lub phaj hlau nplaum, cov cua ntws ntawm lub taub hau sau thiab nws qhov chaw nrawm, huab cua siab poob, vim li ntawd ntawm qhov uas lub disk txav mus ze rau lub sensor (Bernoulli txoj cai hauv kev nqis tes ua). Raws li txoj cai, qhov no yuav tsum tau ua kom cov cuab yeej txhim khu kev qha, tab sis hauv kev xyaum, cov neeg siv khoom tau ntsib nrog qhov tshwm sim tsis zoo li Clicks of Death. Ib qho twg, txawm tias qhov tsawg tshaj plaws, burr ntawm lub phaj hlau nplaum txav ntawm qhov nrawm nrawm tuaj yeem ua rau lub taub hau sau tsis zoo, tom qab ntawd tus tsav yuav nres lub actuator thiab rov ua qhov kev nyeem ntawv, uas tau nrog cov yam ntxwv clicks. Qhov kev ua haujlwm tsis zoo no yog "kev sib kis": yog tias tus neeg siv tsis tau txais nws cov kabmob tam sim ntawd thiab muab lwm lub disk tso rau hauv lub cuab yeej puas, tom qab ob peb qhov kev sim nyeem nws kuj tseem siv tsis tau, txij li lub taub hau sau nrog qhov tawg geometry nws tus kheej puas. nto ntawm floppy disk. Nyob rau tib lub sij hawm, ib tug floppy disk nrog burrs tam sim ntawd "tua" lwm tus nyeem ntawv. Yog li ntawd, cov neeg uas ua hauj lwm nrog Iomega cov khoom yuav tsum tau ua tib zoo xyuas cov kev pab cuam ntawm floppy disks, thiab nyob rau hauv lub tom ntej qauv txawm coj cov ntawv ceeb toom tshwm.
Magneto-optical discs: HAMR retro style
Thaum kawg, yog tias peb twb tau tham txog cov ntaub ntawv khaws cia portable, peb tsis tuaj yeem hais txog qhov txuj ci tseem ceeb ntawm thev naus laus zis li magneto-optical disks (MO). Thawj cov khoom siv ntawm chav kawm no tau tshwm sim thaum ntxov 80s ntawm lub xyoo pua 1988th, tab sis lawv tau dhau los ua ntau tshaj plaws hauv xyoo 256, thaum NeXT tau qhia nws thawj PC hu ua NeXT Computer, uas tau nruab nrog lub magneto-optical drive tsim los ntawm Canon thiab txhawb kev ua haujlwm. nrog disks nrog lub peev xwm ntawm XNUMX MB.
NeXT Computer - thawj PC nruab nrog lub magneto-optical drive
Lub hav zoov ntawm magneto-optical disks ib zaug tau lees paub qhov tseeb ntawm qhov epigraph: txawm hais tias thermomagnetic kaw tshuab (HAMR) tau sib tham nyob rau hauv xyoo tas los no, txoj hauv kev no tau ua tiav hauv MO ntau dua 30 xyoo dhau los! Lub hauv paus ntsiab lus ntawm kev kaw cov magneto-optical discs zoo ib yam li HAMR, tshwj tsis yog qee qhov nuances. Cov disks lawv tus kheej tau ua los ntawm ferromagnets - alloys muaj peev xwm tswj xyuas cov hlau nplaum ntawm qhov kub hauv qab ntawm Curie point (kwv yees li 150 degrees Celsius) thaum tsis raug rau sab nraud magnetic teb. Thaum lub sij hawm kaw, qhov saum npoo ntawm lub phaj yog preheated los ntawm ib tug laser mus rau qhov kub ntawm lub Curie point, tom qab uas ib tug hlau nplaum taub hau nyob rau sab nraum qab ntawm lub disk hloov lub magnetization ntawm qhov chaw sib thooj.
Qhov sib txawv tseem ceeb ntawm txoj hauv kev no thiab HAMR yog cov ntaub ntawv no kuj tau nyeem siv lub tshuab hluav taws xob qis: lub teeb ci polarized tau dhau los ntawm lub phaj disk, cuam tshuam los ntawm cov substrate, thiab tom qab ntawd, dhau los ntawm qhov kho qhov muag ntawm tus nyeem ntawv, ntaus lub sensor, uas tau kaw qhov kev hloov pauv hauv dav hlau laser polarization. Ntawm no koj tuaj yeem soj ntsuam qhov ua tau zoo ntawm Kerr effect (quadratic electro-optical effect), qhov tseem ceeb ntawm qhov uas yog hloov pauv qhov ntsuas qhov muag ntawm cov khoom siv kho qhov muag hauv kev faib ua feem rau square ntawm lub zog electromagnetic.
Lub hauv paus ntsiab lus ntawm kev nyeem ntawv thiab sau cov ntaub ntawv ntawm magneto-optical disks
Thawj magneto-optical disks tsis txhawb kev sau dua tshiab thiab raug xaiv los ntawm cov ntawv luv luv WORM (Sau Ib zaug, Nyeem Ntau), tab sis tom qab cov qauv tshwm sim uas txhawb ntau cov ntawv sau. Kev rov sau dua tau ua nyob rau hauv peb qhov kev hla: ua ntej, cov ntaub ntawv raug tshem tawm ntawm lub disk, tom qab ntawd cov ntaub ntawv nws tus kheej tau ua tiav, tom qab ntawd cov ntaub ntawv ncaj ncees raug kuaj xyuas. Txoj hauv kev no tau lees paub cov ntaub ntawv kaw lus zoo, uas ua rau MOs txawm tias muaj kev ntseeg siab dua li CDs thiab DVDs. Thiab tsis zoo li floppy disks, magneto-optical media tau xyaum tsis raug rau demagnetization: raws li cov tuam txhab kwv yees, lub sij hawm cia ntawm cov ntaub ntawv ntawm rewritable MOs yog tsawg kawg yog 50 xyoo.
Twb tau nyob rau hauv 1989, ob-sided 5,25-nti tsav nrog lub peev xwm ntawm 650 MB tau tshwm sim nyob rau hauv kev ua lag luam, muab kev nyeem ceev txog li 1 MB / s thiab random nkag sijhawm ntawm 50 txog 100 ms. Thaum kawg ntawm qhov muaj koob meej ntawm MO, ib tus tuaj yeem pom cov qauv ntawm kev ua lag luam uas tuaj yeem tuav txog 9,1 GB ntawm cov ntaub ntawv. Txawm li cas los xij, compact 90 mm disks nrog lub peev xwm ntawm 128 txog 640 MB yog siv dav tshaj plaws.
Compact 640 MB magneto-optical tsav los ntawm Olympus
Los ntawm 1994, chav tsev nqi ntawm 1 MB ntawm cov ntaub ntawv khaws cia ntawm xws li ib tug tsav ranges ntawm 27 mus rau 50 xees nyob ntawm seb cov chaw tsim tshuaj paus, uas, nrog rau kev ua tau zoo thiab kev cia siab rau, ua rau lawv ib tug tag nrho kev sib tw tov. Ib qho txiaj ntsig ntxiv ntawm cov khoom siv hluav taws xob magneto-optical piv rau tib ZIPs yog kev txhawb nqa rau ntau qhov sib cuam tshuam, suav nrog ATAPI, LPT, USB, SCSI, IEEE-1394a.
Txawm tias tag nrho cov zoo, magneto-optics kuj muaj ntau qhov tsis zoo. Piv txwv li, tsav los ntawm ntau hom (thiab MO tau tsim los ntawm ntau lub tuam txhab loj, suav nrog Sony, Fujitsu, Hitachi, Maxell, Mitsubishi, Olympus, Nikon, Sanyo thiab lwm yam) tau dhau los ua tsis sib haum xeeb vim muaj kev sib koom ua ke. Nyob rau hauv lem, siab zog noj thiab xav tau ib tug ntxiv txias system txwv kev siv ntawm xws li drives nyob rau hauv lub laptops. Thaum kawg, lub voj voog peb-fold tau nce lub sijhawm sau cia, thiab qhov teeb meem no tsuas yog daws tau los ntawm 1997 nrog rau qhov tshwm sim ntawm LIMDOW (Light Intensity Modulated Direct Overwrite) thev naus laus zis, uas ua ke thawj ob theem rau hauv ib qho los ntawm kev ntxiv cov hlau nplaum ua rau hauv disc. cartridge, uas nqa tawm cov ntaub ntawv tshem tawm. Raws li qhov tshwm sim, magneto-optics maj mam poob qhov cuam tshuam txawm tias nyob hauv thaj chaw ntawm kev khaws cov ntaub ntawv mus ntev, muab txoj hauv kev rau classic LTO streamers.
Thiab kuv ib txwm nco ib yam dab tsi ...
Txhua yam uas tau hais los saum toj no qhia meej meej qhov yooj yim qhov tseeb tias txawm li cas los xij qhov kev tsim tawm yuav muaj peev xwm, nws, ntawm lwm yam, yuav tsum tau raws sijhawm. IBM Simon tau poob rau qhov tsis ua haujlwm, txij li thaum lub sijhawm nws zoo li neeg tsis xav tau kev txav mus los. Magneto-optical disks tau dhau los ua lwm txoj hauv kev zoo rau HDDs, tab sis tseem muaj ntau tus kws tshaj lij thiab cov neeg nyiam, txij li lub sijhawm ntawd ceev, yooj yim thiab, ntawm chav kawm, tus nqi qis yog qhov tseem ceeb rau cov neeg siv khoom loj, uas qhov nruab nrab cov neeg yuav khoom tau npaj. los txi kev ntseeg. Cov ZIP tib yam, txawm tias tag nrho lawv cov txiaj ntsig, yeej tsis tuaj yeem dhau los ua cov ntsiab lus tseem ceeb vim qhov tseeb tias tib neeg tsis xav saib txhua lub disk hauv qab lub iav loj, tab tom nrhiav burrs.
Tias yog vim li cas kev xaiv ntuj tsim thaum kawg kom meej meej demarcated lub lag luam rau hauv ob qho tib si qhov chaw: tshem tawm cov ntaub ntawv khaws cia (CD, DVD, Blu-Ray), flash drives (rau khaws cia me me ntawm cov ntaub ntawv) thiab sab nraud hard drives (rau ntau ntau). Ntawm cov tom kawg, compact 2,5-nti qauv nyob rau hauv ib tus neeg mob tau dhau los ua tus qauv tsis hais, qhov zoo li peb tshuav feem ntau rau cov laptops. Lwm qhov laj thawj rau lawv cov koob meej yog lawv cov txiaj ntsig zoo: yog tias classic 3,5-nti HDDs nyob rau hauv cov ntaub ntawv sab nraud tsis tuaj yeem hu ua "portable", thiab lawv yuav tsum tau txuas lub zog ntxiv (uas txhais tau tias koj tseem yuav tsum nqa lub adapter nrog koj. ), ces qhov feem ntau uas 2,5-nti tsav yuav xav tau yog ib qho txuas ntxiv USB, thiab tom qab thiab cov qauv siv hluav taws xob tsis xav tau txawm tias qhov no.
Los ntawm txoj kev, peb tshuav qhov zoo li me me HDDs rau PrairieTek, ib lub tuam txhab me tsim los ntawm Terry Johnson hauv 1986. Tsuas yog peb xyoos tom qab nws nrhiav pom, PrairieTek tau qhia lub ntiaj teb thawj 2,5-nti hard drive nrog lub peev xwm ntawm 20 MB, hu ua PT-220. 30% ntau compact piv rau cov kev daws teeb meem desktop, tus tsav muaj qhov siab ntawm tsuas yog 25 hli, dhau los ua qhov kev xaiv zoo tshaj plaws rau kev siv hauv laptops. Hmoov tsis zoo, txawm tias yog cov pioneers ntawm lub lag luam me me HDD, PrairieTek yeej tsis muaj peev xwm kov yeej kev lag luam, ua qhov ua yuam kev loj heev. Tom qab tsim kev tsim khoom ntawm PT-220, lawv tau tsom mus rau lawv cov kev siv zog ntxiv rau kev ua haujlwm me me, sai sai tso tus qauv PT-120, uas, nrog tib lub peev xwm thiab ceev cov yam ntxwv, muaj ib lub thickness ntawm tsuas yog 17 hli.
2,5-nti thib ob tiam PrairieTek PT-120 hard drive
Qhov kev xam pom tsis zoo yog tias thaum PrairieTek engineers tau sib ntaus sib tua rau txhua millimeter, cov neeg sib tw xws li JVC thiab Conner Peripherals tau nce lub ntim ntawm cov tsav nyuaj, thiab qhov no tau dhau los ua kev txiav txim siab hauv qhov tsis sib xws. Sim ntes lub tsheb ciav hlau, PrairieTek nkag mus rau hauv kev sib tw caj npab, npaj tus qauv PT-240, uas muaj 42,8 MB ntawm cov ntaub ntawv thiab muaj cov ntaub ntawv siv hluav taws xob tsawg rau lub sijhawm ntawd - tsuas yog 1,5 W. Tab sis alas, txawm tias qhov no tsis tau cawm lub tuam txhab los ntawm kev puas tsuaj, thiab yog li ntawd, twb nyob rau hauv 1991 nws tau tso tseg.
Zaj dab neeg ntawm PrairieTek yog lwm qhov kev qhia meej txog kev nce qib thev naus laus zis li cas, txawm tias lawv zoo li tseem ceeb npaum li cas, tuaj yeem tsis lees paub los ntawm kev ua lag luam vim lawv tsis muaj sijhawm. Nyob rau hauv thaum ntxov 90s, cov neeg siv khoom tseem tsis tau lwj los ntawm ultrabooks thiab ultra-nyias smartphones, yog li tsis muaj kev xav tau ceev ceev rau cov tsav no. Nws txaus kom rov nco txog thawj lub ntsiav tshuaj GridPad, tso tawm los ntawm GRiD Systems Corporation hauv xyoo 1989: cov khoom siv "portable" hnyav dua 2 kg thiab nws thickness mus txog 3,6 cm!
GridPad - lub ntiaj teb thawj ntsiav tshuaj
Thiab xws li "tus me nyuam" nyob rau hauv cov hnub tau suav hais tias yog qhov compact thiab yooj yim: cov neeg siv kawg tsuas tsis pom dab tsi zoo dua. Nyob rau tib lub sijhawm, qhov teeb meem ntawm qhov chaw disk tau nrawm dua. Tib GridPad, piv txwv li, tsis muaj lub zog tsav txhua yam: cov ntaub ntawv khaws cia tau siv los ntawm RAM chips, tus nqi uas tau tswj hwm los ntawm cov roj teeb built-in. Piv rau cov khoom siv zoo sib xws, Toshiba T100X (DynaPad) uas tau tshwm sim tom qab zoo li qhov txuj ci tseem ceeb tiag tiag vim qhov tseeb tias nws nqa tag nrho 40 MB hard drive ntawm lub nkoj. Qhov tseeb tias "mobile" ntaus ntawv yog 4 centimeters tuab tsis thab leej twg.
Toshiba T100X ntsiav tshuaj, paub zoo dua hauv Nyiv li DynaPad
Tab sis, raws li koj paub, qab los noj mov. Txhua xyoo, cov neeg siv kev thov tau loj hlob, thiab nws tau dhau los ua nyuaj dua los ua kom lawv txaus siab. Raws li lub peev xwm thiab ceev ntawm kev cia cov xov xwm tau nce, ntau thiab ntau tus neeg pib xav tias cov khoom siv ntawm tes yuav ua tau ntau dua, thiab lub peev xwm muaj peev xwm muaj nyob rau ntawm lawv qhov chaw pov tseg ib lub tshuab nqa tau yooj yim uas tuaj yeem ua kom haum txhua cov ntaub ntawv tsim nyog yuav los ua ke. Hauv lwm lo lus, muaj qhov xav tau ntawm kev ua lag luam rau cov khoom siv sib txawv hauv cov ntsiab lus ntawm kev yooj yim thiab ergonomics, uas yuav tsum tau txaus siab, thiab kev sib cav ntawm cov tuam txhab IT txuas ntxiv nrog lub zog tshiab.
Ntawm no nws yog tsim nyog rov mus saib lub epigraph hnub no. Lub sijhawm ntawm cov khoom siv hauv xeev tau pib ntev ua ntej xyoo 1984s: thawj tus qauv ntawm flash nco tau tsim los ntawm engineer Fujio Masuoka ntawm Toshiba Corporation rov qab rau xyoo 1988, thiab thawj cov khoom lag luam raws li nws, Digipro FlashDisk, tau tshwm sim hauv khw. xa 16. Qhov txuj ci txuj ci thev naus laus zis muaj 5000 megabytes ntawm cov ntaub ntawv, thiab nws tus nqi yog $ XNUMX.
Digipro FlashDisk - thawj lub lag luam SSD tsav
Cov qauv tshiab tau txais kev txhawb nqa los ntawm Digital Equipment Corporation, uas qhia txog 90-nti EZ5,25x series cov khoom siv nrog kev txhawb nqa rau SCSI-5 thiab SCSI-1 interfaces thaum ntxov 2s. Lub tuam txhab Israeli M-Systems tsis tau sawv ib sab, tshaj tawm xyoo 1990 ib tsev neeg ntawm cov khoom siv hauv xeev hu ua Fast Flash Disk (lossis FFD), uas yog ntau dua lossis tsawg dua qhov nco txog niaj hnub no: SSDs muaj 3,5-nti hom thiab tuaj yeem tuav. los ntawm 16 mus rau 896 megabytes cov ntaub ntawv. Thawj tus qauv, hu ua FFD-350, tau tso tawm xyoo 1995.
M-Systems FFD-350 208 MB - tus qauv ntawm SSDs niaj hnub
Tsis zoo li cov tsav nyuaj ib txwm muaj, SSDs tau ntau dua compact, muaj kev ua tau zoo dua thiab, qhov tseem ceeb tshaj, tiv taus kev poob siab thiab muaj zog vibration. Muaj peev xwm, qhov no ua rau lawv yuav luag cov neeg sib tw zoo tshaj plaws rau kev tsim cov khoom siv txawb, yog tias tsis yog rau ib qho "tab sis": tus nqi siab rau ib chav tsev ntawm cov ntaub ntawv khaws cia, uas yog vim li cas cov kev daws teeb meem zoo li no tsis tsim nyog rau cov neeg siv khoom lag luam. Lawv tau nrov hauv kev lag luam ib puag ncig, tau siv dav hauv aviation los tsim "cov thawv dub," thiab tau teeb tsa hauv supercomputers ntawm cov chaw tshawb fawb, tab sis tsim cov khoom muag thaum lub sijhawm ntawd tsis muaj lus nug: tsis muaj leej twg yuav yuav lawv txawm tias ib lub tuam txhab txiav txim siab muag cov drives ntawm tus nqi.
Tab sis kev lag luam kev hloov pauv tsis ntev los no. Txoj kev loj hlob ntawm cov neeg siv khoom ntawm kev tshem tawm SSD drives tau yooj yim heev los ntawm kev yees duab digital, vim tias nws nyob hauv qhov kev lag luam no muaj qhov tsis txaus ntawm kev cog lus thiab lub zog txuag cov xov xwm. Txiav txim rau koj tus kheej.
Lub ntiaj teb thawj lub koob yees duab digital tau tshwm sim (nco txog cov lus ntawm Ecclesiastes) rov qab rau lub Kaum Ob Hlis 1975: nws tau tsim los ntawm Stephen Sasson, tus kws tshaj lij ntawm Eastman Kodak Company. Tus qauv tsim muaj ntau lub kaum os cov ntawv luam tawm Circuit Court, ib chav kho qhov muag qiv los ntawm Kodak Super 8, thiab daim kab xev kaw (cov duab tau kaw rau ntawm lub suab zoo tib yam). 16 nickel-cadmium roj teeb tau siv los ua lub zog rau lub koob yees duab, thiab tag nrho cov khoom hnyav 3,6 kg.
Thawj lub koob yees duab digital qauv tsim los ntawm Eastman Kodak Company
Qhov kev daws teeb meem ntawm CCD matrix ntawm "tus me nyuam" no tsuas yog 0,01 megapixels, uas ua rau nws ua tau kom tau txais thav ntawv ntawm 125 Γ 80 pixels, thiab txhua daim duab siv sijhawm 23 vib nas this los tsim. Muab rau hauv tus account xws li "ntseeg" cov yam ntxwv, xws li ib chav tsev yog qis dua cov tsoos zaj duab xis SLRs nyob rau hauv tag nrho cov fronts, uas txhais tau hais tias tsim ib tug coj mus muag khoom raws li nws yog tawm ntawm lo lus nug, txawm hais tias lub invention tom qab tau lees paub tias yog ib qho tseem ceeb tshaj plaws. Cov ntsiab lus tseem ceeb hauv keeb kwm ntawm kev txhim kho kev yees duab, thiab Steve tau raug coj mus rau hauv Consumer Electronics Hall of Fame.
6 xyoo tom qab, Sony tau tshaj tawm txoj kev pib los ntawm Kodak, tshaj tawm thaum Lub Yim Hli 25, 1981 lub koob yees duab tsis muaj yees duab Mavica (lub npe yog lub npe luv rau Magnetic Video Camera).
Ib tug qauv ntawm Sony Mavica cov koob yees duab
Lub koob yees duab los ntawm Nyiv loj heev saib ntau qhov nthuav dav: tus qauv siv 10 los ntawm 12 mm CCD matrix thiab khav theeb siab tshaj plaws ntawm 570 x 490 pixels, thiab cov ntaub ntawv tau ua tiav ntawm compact 2-nti Mavipack floppy disks, uas muaj peev xwm ua tau. tuav ntawm 25 mus rau 50 thav duab nyob ntawm hom kev tua. Qhov tshaj plaws yog tias lub thav duab raug tsim muaj ob lub TV, txhua qhov tau kaw ua cov yeeb yaj kiab sib xyaw, thiab nws tuaj yeem kaw ob qhov chaw ib zaug, lossis tsuas yog ib qho xwb. Nyob rau hauv qhov kawg, lub thav duab daws teeb meem poob los ntawm 2 zaug, tab sis xws li daim duab hnyav ib nrab li ntau.
Sony thawj zaug tau npaj yuav pib tsim ntau ntawm Mavica hauv xyoo 1983, thiab tus nqi muag khoom rau cov koob yees duab yuav tsum yog $ 650. Hauv kev xyaum, thawj cov qauv tsim tau tshwm sim hauv xyoo 1984 nkaus xwb, thiab kev ua lag luam ntawm qhov project nyob rau hauv daim ntawv ntawm Mavica MVC-A7AF thiab Pro Mavica MVC-2000 pom lub teeb tsuas yog xyoo 1986, thiab cov koob yees duab raug nqi yuav luag ib qho kev txiav txim siab ntau dua. tshaj qhov tau npaj tseg lawm.
Cov koob yees duab Sony Pro Mavica MVC-2000
Txawm hais tias tus nqi zoo heev thiab kev tsim kho tshiab, nws nyuaj rau hu rau thawj Mavica qhov kev daws teeb meem zoo tshaj plaws rau kev siv, txawm hais tias nyob rau qee lub sijhawm xws li lub koob yees duab tau dhau los ua ib qho kev daws teeb meem zoo tshaj plaws. Piv txwv li, CNN cov neeg sau xov xwm siv Sony Pro Mavica MVC-5000 thaum npog lub Rau Hli 4 cov xwm txheej hauv Tiananmen Square. Tus qauv txhim kho tau txais ob qho kev ywj pheej CCD matrices, ib qho uas tsim cov teeb liab teeb pom kev zoo, thiab lwm yam - lub teeb liab sib txawv. Txoj hauv kev no ua rau nws muaj peev xwm tso tseg kev siv Bayer xim lim thiab ua kom cov kab rov tav daws teeb meem rau 500 TVL. Txawm li cas los xij, qhov txiaj ntsig tseem ceeb ntawm lub koob yees duab yog nws qhov kev txhawb nqa rau kev sib txuas ncaj qha rau PSC-6 module, uas tso cai rau koj xa cov duab tau txais los ntawm xov tooj cua ncaj qha mus rau lub chaw saib xyuas. Nws yog ua tsaug rau qhov no uas CNN muaj peev xwm yog thawj tus tshaj tawm tsab ntawv ceeb toom los ntawm qhov chaw, thiab Sony tom qab ntawd txawm tau txais ib qho khoom plig tshwj xeeb Emmy rau nws txoj kev koom tes rau kev tsim kho digital kis ntawm cov duab xov xwm.
Sony Pro Mavica MVC-5000 - tib lub koob yees duab uas ua rau Sony tus yeej Emmy Award
Tab sis yuav ua li cas yog tias tus kws yees duab muaj kev lag luam ntev mus deb ntawm kev vam meej? Hauv qhov no, nws tuaj yeem nqa nrog nws ib lub koob yees duab zoo Kodak DCS 100, uas tau tso tawm thaum lub Tsib Hlis 1991. Ib tug hybrid loj heev ntawm ib hom me me Nikon F3 HP SLR lub koob yees duab nrog DCS Digital Film Rov qab lub thawv digital teeb-saum nruab nrog lub winder, nws tau txuas nrog rau Sab Nraud Digital Storage Unit (nws yuav tsum tau hnav ntawm lub xub pwg pluaj) siv ib kab.
Kodak DCS 100 lub koob yees duab digital yog lub cim ntawm "compactness"
Kodak muaj ob tus qauv, txhua tus muaj ntau qhov kev hloov pauv: xim DCS DC3 thiab xim dub-thiab-dawb DCS DM3. Txhua lub koob yees duab hauv kab tau nruab nrog matrices nrog kev daws teeb meem ntawm 1,3 megapixels, tab sis sib txawv ntawm qhov loj ntawm qhov tsis, uas tau txiav txim siab qhov siab tshaj plaws ntawm cov thav ntawv thaum lub sijhawm tua tas li. Piv txwv li, kev hloov kho nrog 8 MB ntawm lub nkoj tuaj yeem tua ntawm qhov ceev ntawm 2,5 thav duab ib ob ntawm 6 thav ntawv, thiab ntau dua, 32 MB, tso cai rau ncua ntev ntawm 24 thav ntawv. Yog tias qhov chaw pib no dhau lawm, qhov kev tua ceev tau nqis mus rau 1 thav duab ib 2 vib nas this kom txog rau thaum qhov tsis tau pom meej meej.
Raws li rau DSU chav tsev, nws tau nruab nrog 3,5-nti 200 MB hard drive, muaj peev xwm khaws cia los ntawm 156 "raw" cov duab mus rau 600 compressed siv lub hardware JPEG converter (yuav thiab ntsia ntxiv), thiab LCD zaub rau saib duab . Smart Storage txawm tso cai rau koj ntxiv cov lus piav qhia luv luv rau cov duab, tab sis qhov no yuav tsum tau txuas cov keyboard sab nraud. Ua ke nrog cov roj teeb, nws qhov hnyav yog 3,5 kg, thaum tag nrho qhov hnyav ntawm cov khoom siv mus txog 5 kg.
Txawm hais tias qhov tsis txaus ntseeg yooj yim thiab tus nqi ntawm 20 txog 25 txhiab daus las (hauv qhov kev teeb tsa siab tshaj plaws), kwv yees li 1000 cov khoom siv zoo sib xws tau muag hauv peb lub xyoos tom ntej, uas, ntxiv rau cov neeg sau xov xwm, nyiam cov tsev kho mob, tub ceev xwm thiab ntau lub tuam txhab lag luam. Hauv ib lo lus, muaj kev thov rau cov khoom lag luam zoo li no, nrog rau kev xav tau ceev ceev rau ntau qhov chaw cia khoom me me. SanDisk muab cov kev daws teeb meem tsim nyog thaum nws qhia txog CompactFlash tus qauv hauv xyoo 1994.
CompactFlash nco phaib tsim los ntawm SanDisk thiab PCMCIA adapter rau txuas lawv rau PC
Cov hom ntawv tshiab tau dhau los ua kom muaj kev vam meej uas nws tau siv niaj hnub no, thiab CompactFlash Association, tsim nyob rau xyoo 1995, tam sim no muaj ntau tshaj 200 cov tuam txhab koom nrog, suav nrog Canon, Eastman Kodak Company, Hewlett-Packard, Hitachi Global Systems Technologies, Lexar Media, Renesas Technology, Socket Communications thiab lwm yam.
CompactFlash nco phaib khav tag nrho qhov ntev ntawm 42 hli los ntawm 36 hli nrog lub thickness ntawm 3,3 hli. Lub cev sib cuam tshuam ntawm cov tsav tsheb yog qhov tseem ceeb ntawm PCMCIA (50 tus pins tsis yog 68), ua tsaug rau qhov no daim npav tuaj yeem txuas tau yooj yim rau PCMCIA Hom II nthuav daim npav qhov siv lub passive adapter. Siv, dua, ib tug passive adapter, CompactFlash yuav pauv cov ntaub ntawv nrog peripheral li ntawm IDE (ATA), thiab tshwj xeeb active adapters ua rau nws muaj peev xwm mus ua hauj lwm nrog serial interfaces (USB, FireWire, SATA).
Txawm hais tias muaj peev xwm me me (thawj CompactFlash tuaj yeem tuav tau 2 MB ntawm cov ntaub ntawv nkaus xwb), daim npav nco ntawm hom no tau xav tau nyob rau hauv ib puag ncig kev ua haujlwm vim lawv cov compactness thiab efficiency (ib qho tsav no siv li 5% ntawm hluav taws xob piv rau cov pa 2,5. -inch HDDs, uas ua rau nws ua tau kom ntev lub roj teeb lub neej ntawm ib tug portable ntaus ntawv) thiab versatility, uas yog tiav los ntawm ob qho tib si kev txhawb nqa rau ntau yam sib txawv interfaces thiab muaj peev xwm ua hauj lwm los ntawm ib lub hwj chim qhov chaw nrog ib tug voltage ntawm 3,3 los yog 5 volts, thiab Qhov tseem ceeb tshaj plaws - ua rau muaj kev cuam tshuam rau overloads tshaj 2000 g, uas yog ib qho yuav luag tsis tuaj yeem siv rau cov hard drive classic.
Qhov tshaj plaws yog hais tias nws yog technically tsis yooj yim sua los tsim tiag tiag shock-resistant hard drives vim lawv tsim nta. Thaum ntog, txhua yam khoom raug cuam tshuam rau ntau pua lossis ntau txhiab g (tus qauv nrawm vim lub ntiajteb txawj nqus sib npaug li 9,8 m / s2) tsawg dua 1 millisecond, uas rau cov HDDs classic yog fraught nrog ntau qhov tshwm sim tsis zoo. , ntawm cov uas nws yuav tsum tau highlight:
- swb thiab tshem tawm ntawm daim hlau nplaum;
- cov tsos ntawm kev ua si nyob rau hauv bearings, lawv hnav ntxov ntxov;
- kev nplawm ntawm lub taub hau ntawm qhov chaw ntawm cov hlau nplaum.
Qhov xwm txheej kawg yog qhov txaus ntshai tshaj plaws rau kev tsav tsheb. Thaum lub zog cuam tshuam tau raug coj mus rau perpendicularly lossis ntawm lub kaum sab xis rau lub dav hlau kab rov tav ntawm HDD, lub taub hau hlau nplaum ua ntej deviate los ntawm lawv txoj haujlwm qub thiab tom qab ntawd qis qis rau ntawm qhov chaw ntawm lub pancake, kov nws nrog ntug, vim qhov tshwm sim ntawm uas lub phaj hlau nplaum tau txais kev puas tsuaj saum npoo. Tsis tas li ntawd, tsis yog tsuas yog qhov chaw uas qhov kev cuam tshuam tshwm sim raug kev txom nyem (uas, los ntawm txoj kev, tuaj yeem muaj qhov tseem ceeb yog tias cov ntaub ntawv raug kaw lossis nyeem thaum lub caij nplooj zeeg), tab sis kuj yog thaj chaw uas cov khoom siv me me ntawm cov hlau nplaum txheej. tawg: ua magnetized, lawv tsis hloov nyob rau hauv qhov kev txiav txim ntawm centrifugal quab yuam mus rau periphery, tshuav nyob rau saum npoo ntawm cov hlau nplaum, cuam tshuam nrog ib txwm nyeem / sau ua haujlwm thiab ua rau muaj kev puas tsuaj ntxiv rau pancake nws tus kheej thiab sau lub taub hau. Yog tias qhov cuam tshuam muaj zog txaus, qhov no tuaj yeem ua rau lub sensor raug torn thiab tsav tsis ua tiav.
Nyob rau hauv lub teeb ntawm tag nrho cov saum toj no, rau cov yees duab reporters lub tshiab drives yog tiag tiag irreplaceable: nws yog zoo dua kom muaj ib lub kaum os los yog ob daim ntawv unpretentious nrog koj dua li nqa ib yam khoom loj ntawm VCR rau koj nraub qaum, uas yog yuav luag 100. % tej zaum yuav ua tsis tau los ntawm lub zog me ntsis. Txawm li cas los xij, daim npav nco tseem kim dhau rau cov neeg siv khoom muag. Tias yog vim li cas Sony tau ua tiav kev ua lag luam taw tes thiab tua nrog Mavica MVC-FD lub voos xwmfab, uas tau khaws cov duab rau tus qauv 3,5-nti floppy disks formatted hauv DOS FAT12, uas ua kom muaj kev sib raug zoo nrog yuav luag txhua lub PC ntawm lub sijhawm.
Amateur digital koob yees duab Sony Mavica MVC-FD73
Thiab qhov no txuas ntxiv yuav luag txog thaum kawg ntawm kaum xyoo, txog thaum IBM cuam tshuam. Txawm li cas los xij, peb yuav tham txog qhov no hauv tsab xov xwm tom ntej.
Dab tsi txawv txawv li koj tau hla? Tej zaum koj muaj sijhawm los tua ntawm Mavica, saib qhov kev nyuaj siab ntawm Iomega ZIP nrog koj tus kheej ob lub qhov muag, lossis siv Toshiba T100X? Qhia koj cov dab neeg hauv cov lus.
Tau qhov twg los: www.hab.com