RAM Ѻ ROM Ф


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    Ѥ Hitzuja's Avatar
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    Talking RAM Ѻ ROM Ф



    ҡҹʹҹФѺ ͹ 10 Ǻ RAM Ѻ ROM ͹͹˹觷ªҷӧҹ ǹҡͺش§ RAM ҡ͹çҡáç ¨оѡѹҡҹաҤѺ



    ٻͧǡѺʹ¹ҴٹФѺ ҡ ФѺͧáͧšͪͨԧ ENIAC Ҩҡ Electronics Numerical Integrator and Computer (ػóӹdzҧùԤ) Ҿٴ֧öͧ ENIAC С ͧԴŢ㹻ѨغѹФѺ (ҴҧѹҡԧѺҧ ENIAC ѺͧԴŢ㹻Ѩغѹ) ... ENIAC 繼ŧҹͧ John W. Mauchly ( Ѻ ͪ) J. Prespern Eckert ( ͤõ) 㹻 .. 1946 աзǧͧðԡ (Pentagon) 繡ͧع (ҡѹҨشʧѡͧçù "ͤӹdzԶաع׹˭" Ѻ) ...

    ENIAC ѹáѺǢ RAM Ѻ ROM ФѺ ??? ԤѺ鹪繤ǢҴ˹ ͹ §ʹ٭ҡ (vacuum tube electron tube) ӹǹ 18,000 ʹ !!! Ҿͤسعͧ !!! 18,000 ʹѺ


    ʹ٭ҡ㹪ǧ .. 1950 Ѻ ֡ҾǤǴ ʹǹ 18,000 ʹ

    ٴ֧ʹյҡФѺ ... ʹյ觤 ... عԡؤáͧ˹¤ǡѹѺ

    RAM Ҩҡ Random Access Memory (˹¤Ҷ֧Ẻ ) ˹¤ѡ кؤ Ѩغѹ ˹¤ӪԴ ͹حҵ¹ҹ㹵˹觵ҧ ҧ ǴǾ 觵ҧҡ红ŪԴ ҧ෻ ʹʡ բͨӡѴ㹡ҹ¹ ͧӵӴѺ͹ѧѴ բ͡ӨѴẺ ͹حҵҹ§ҧ

    ǹҡѺҧԴҡѺ ... ѧࡵ Ẻͺ . "What is computer's main memory?" ҧҨеͺ Hard disk ѧռѹ ӵͺԧ RAM Ѻ ... ͹ԴẺ áѴ Harddisk ҧǹԤѺ ... ͤѺ

    RAM Ҩѧӧҹ ͢ŷ㹡ûż ͧѧӧҹ 价ѹ к١Դŧ RAM Ѵ Volatile Memory ͧҡ˹¤ӪԴ红੾ ҷա俿§ҹ (ͨԧ §ФѺ)

    ͧ㹡Т ҧûż سѵԷӤѭС˹觢ͧ Ƿ˹觵˹觵ҧ ˹¤դ ѹ 觵ҧҡ෤蹺ҧҧ觵ͧ͡ ҷԵ亵Ҷ֧

    кá ʹحҡȷӧҹ¡Ѻ»Ѩغѹ ػó ¡ҡ ˹¤Ẻ᡹õ (core memory) դسѵ㹡Ҷ֧Ẻǡѹ ǤԴͧ˹¤ӷӨҡʹ᡹õ ѧ Өҡǧ (IC)

    RAM ѡǢͧѺػóҶ֧ ҡѹ ˹¤ẺŹ (delay line memory) §㹷ͺèػͷ㹡红źԵ


    ˹¤Ẻͷͧͧ UNIVAC I (.. 1951) ... áѹ ׹ѧ Proton Cannon ͧ Ironman Mavel Superheros (PSX) (ҧ-˹-ҧ-˹-R1)

    Сѧ Drum memory (˹¤Ẻ) 觷ӧҹ§촴ʡ㹻Ѩغѹ 繢ٻͧᶺٻǧ Ҩ RAM ФѺҡ÷ӧҹǴ ROM ҡ


    Drum memory ͧͧ ZAM-41
    ͧŹ

    ªԴդسѵ volatile ¶֧ŷ纨٭件һԴͧ ѡ红źԵٻͧШ俿㹵 纻Ш ѧ蹡ó 䴹Ԥ ٻʶҹТͧԻͻ ѧ蹢ͧ ᵵԡ

    ѨغѹաþѲ NV-RAM (Non-volatile RAM) ѧѡҢŶ֧§ ෤շ ෤չ⹷Ǩҡ͹ (carbon nanotube) ҡó magnetic tunnel



    Ẻͧͧ CNTs Carbon NanoTube Ѻ ... ѡҧҨֹ仪Ǣ ʹռҹ˹ѧ Physic of the Impossible ¹ Michio Kaku ҤѺ ... ا Michio Kaku Һ֧͡ CNTs зҨҧ Force Field (Force Shield) оѧҹ ҡѺ Concept ͧ Crysis ʹ¤Ѻ Nanosuit Maximum Armor ҧ¤ԴͧԴҹͧا Michio Kaku ҡ ... ͧ͡ա ͹ФѺ



    Ĵ͹ .. 2546 աԴẺ (Magnetic RAM, MRAM) Ҵ 128 Kib 觼Ե෤дѺ 0.18 ͹ 㨢ͧẺҨҡҡó magnetic tunnel ͹Զع¹ .. 2547 ѷ ԹԹ͹ (Infineon) ԴǵẺҴ 16 Mib ෤ 0.18 ͹ǡѹ

    Ѻ˹¤Өҡ͹⹷ ѷ ṹ (Nantero) ҧẺҹ 10 GiB 㹻 .. 2547

    ͧ öͧҧǹ繾Ԫѹ ӧҹ͹촴ʡǡҡ ѡ¡ ʤ (Ramdisk) ʹ仵 http://forum.pcstats.com/showthread.php?t=29132 ФѺ

    § RAM ١ѹѺ



    ػͧͧ RAM ͤ ǵʹ ROM ѹѺ ...

    ROM Ҩҡ Read-only Memory (˹¤ҹ) ˹¤Ẻá觵ǹӪǤǪԴҹ ҧ ͺѹ֡㹤 öѹ֡ (ҧ) ˹¤ӷիͿ͢ ойҵ͡Ѻ Micro Processor µç ˹¤ӻ§ š仨ҡ˹¤ (Non-volatile) ·仨红ŷͧաա BIOS (Basic Input output System) Mainboard Firmware Ǻ÷ӧҹͧ Sony PSP ͧԴŢѧդѺ ѧࡵҡҡ Memo ͧԴŢ

    Mask ROM ˹¤ӻ ŷ ж١Ҩҡçҹ鹵͹üԵ Ҩ ROM Դ ͢Źա¹ŧ ѺҹԵҡ ö ¹ŧ ROM ROM շẺẺ MOS ( CMOS) ... ҹ֡͡ ֧֡ѺФѺ

    ҡͫ ROM ẺáŨеͧҨҡçҹ еͧԵӹǹҡ֧ФҡѺ鹷ع㹡üԵ աçҹԵͫըŷ ѺкԨԵͤԵ͡Ҩӹǹ ҡеͧ ˹¤ ROM ö˹¤ ROM ͧ ˹¤ӹ¡ PROM (Programmable Read Only Memory) ˹ ӻ 红տ (fused) ˹¤ӷŷͧж١ ¼ͧ »͹çѹ٧ (HIGH VOLTAGE PULSED) ͫ PROM ѧ١ ŷءͷءԵդҡѹ ͨԡ 1 ա»͹çѹ٧仨 ҧ Ҵ ˹觷鹵ͨԡ 0 PROM ١ ö¹ŧա ͧҡҴö ˹¤ӪԴ 㹧ҹ٧ 觤٧ ˹¤ӷ骹Դ

    ˹¤ӻ EPROM ˹¤ӻ PROM öź ѺҹҧǧõẺҨͧա ͢ Ũж١ ¼¡ѭҳ çѹ٧ (HIGH VOLTAGE SIGNAL) ҹ㹵 EPROM ԸǡѺ PROM ˹¤ӻ 2 źŴѧŵŵ ͷ¡ѹ UV PROM ǹա˹˹¤ӷźŴ ¡ EEPROM Ҩҡ Electrical Erasable PROM

    ˹¤ӻ UV PROM ¡û͹çѹ俿ҷ ТŨж١ѹ֡ʹ Ѻźŷ¡éʧŵŵ 㹵 ͫ ¼ҹҧͧʷӴ¼֡͵躹ͫ ͩʧ˹ (ҳ 5 - 10 ҷ) ŷ㹡ж١ź 觪ǧҷʧöҡŷ (DATA SHEET) ҡѺ EPROM

    ... ǹҡҡ EEPROM Ѻ¹ѹҡ ¹Ѻ Mikro C Ѻ ͹ԡ¹觧 ǡ Project µ͹

    㹪ԵШѹͧҹ ʹͳҤ ÷ ROM ҧ ???



    Hard disk drive, HDD (1954) ŧҹҡͧԨ IBM ҡʹյѨغѹ
    ѹ ROM ? Һ͡ç Ѵ non-volatile ͻԴͧšѧ ...



    8-inch, 5¼-inch, and 3½-inch Floppy disks (1969 - 1982)
    ROM ʹԵȵɷ 19 ǹǹԴ֧ʹյ ͹ѧ¤Ѻ 㹡ͧ IBM-DOS 3.0 5¼-inch 2 3½-inch ա



    Gramophone record § !!! 12-inch (30-cm) 33 1/3 Rpm (ͺ/ҷ) ... ROM Ѻ ǡҡѧŧФѺ ѧҧѹ ҿѧҧ׹֡šФѺ ѹѧ䧡



    CD-ROM (1979) ѡäѺ ˹ӫѧ繷红ѡͧҡ HDD ա ... ǧͧشؤͧͧ Playstation Ѻ ػԤ 700 MB 80 ҷբͧŧ



    DVD-ROM (1993) ѧҡؤͧͧ Playstation DVD-ROM ըӹǹҡ ա˵ؼŷ DVD ᷹ CD ͧط§Ѻҹͧä ´٧ ... DVD 4 ẺѺ ~4.7 GB (single-layer) ~8.54 GB (double-layer) ~9.4 GB (rare-single-layer) ~17.08 GB (rare-double-layer)



    VCDHD (Versatile Compact Disc High Density) ٷҤѧ㹡蹹ѡ ¤Դ VCDHD դöѹһзѺ "͵-͹ CD ẺЪѺ" ... Դ Դա Դ Դա Դ Դա ѧ蹵 ... ش 4.7 GB DVD 令Ѻ 㹻 Russia, Ukraine Poland § ! ѹ



    LD, LaserDisc (1978) Ҿس繹 ͡ҤѺ Ҵѹҧ˭ !!! ... !!! ... !!! ԧѺ ҤԴ CD ҧѺ LaserDisc ǵ֧ͧ 7 ҧШ¤Ѻ ˭袹ҴǤ 60 ҷ ѴẺ CLV , 30 ҷ CAV



    EVD , Enhanced Versatile Disc (1999) ѡҡѡ ¤Ѻ ¹ѹ ... 繧ҹԨ¢ͧǨչѺ ˵ؼҤ license ͤ͹حҵشʹᾧ $13–$20 US ͧ ($16.5 x 33.6 = 437) ´¤Ѻ͡



    MD, MiniDisc (1992) ѹǧ֧Ѻ ͹鹹Ҩؤ Sony Walkman 繨ѺҾ Sony PSP UMD ᷹ ... ҵðҹ 80 ҷ Hi-MD ֧ 1 1 GB



    GD-ROM, Giga Disk read-only memory ǵͧ !!! Թҹ Galaxy ETC. ˹ GD-ROM Ѻ ҧ Virtua Cop 3, Ghost Squad, The House of The Dead 3 GD-ROM 駹鹤Ѻ 繼żԵҡ Sega Yamaha Ѻ NAOMI, Triforce Chihiro ... 1.2 GB



    UMD, Universal Media Disc (2003) PSP ǧáͧ UMD ҧФѺ Ҿ¹좹ҴǷҤ͹Ҵ դѺ Burnout : Legend ¤ŧ Burnout Ҥ֧ 1,650 ҷ ... UMD 2 ẺѺ 900 MB (single layer) 1.8 GB (dual layer)

    Blu-ray, BD (2004) 觷褹ѡ˹ѧҡҡش ͧҡͧ Blu-ray (ͧ蹡͹ Ǩ价 ?) ͹ Blu-ray 2 ҧѡѺ Ҿ¹ Ѻ PS3 ... ҡ֧ 25 GB (single-layer), 50 GB (dual-layer) ͳҤҨ 1 TB (future)
    HD-DVD, High-Definition/Density DVD
    繤觢ͧ Blu-ray ҡ͹ʧ High-Definition ŧ HD-DVD ͧشҧ Blu-ray ŧҴç Ѻ HD-DVD ʹѺʹعҧͧԴѧ仴 ҧ Xbox360 ҹ HD-DVD ѡ 繢¶ºѺ PS3 ʹѺʹع Blu-ray ... »ҳ 15 GB (single layer) 30 GB (dual layer)




    HVD, Holographic Versatile Disc (2009) ҡ¹ѡѺ HVD §Ţǵͧͧ !!! ФѺ
    Spoiler:
    㹷ҧɮ 1-6 TB (1024-6144 GB) ѧ ط 10-100 TB (10240-102400 GB) ҡª·ʹ 18 !!!
    ͹ѧԨ¡ѹѺ ͧաҹ ...

    ԧ§ҹ͡Ѻ Ҩй觹Ѻ礧˹¹¡ҹ觹ѺǹԴ֧ ... ROM աǷ͡ Flash Drive Card ҧ SD, MMC, Memory Stick ǡ෻ŧ աҡ¤Ѻ ... ҵͳҤաФѺ ˹ TB ҨѺԵШѹ Ҩ÷ҡ仨ҡǧ е͹ RAM ᷹ ROM ROM ᷹ RAM 蹡ѹѺ (RAM ᷹ ROM Ramdisk ǹ ROM ᷹ RAM ͧ躹 Harddisk Virtual Memory Paging File) ͧʹٷ RAM ROM ѹ令Ѻ

    ͺسѺ

    Credit : http://en.wikipedia.org/wiki/Computer_data_storage , http://th.wikipedia.org/wiki/ , http://en.wikipedia.org/wiki/Random-access_memory , http://th.wikipedia.org/wiki/ , http://en.wikipedia.org/wiki/Vacuum_tube , http://en.wikipedia.org/wiki/Drum_memory , http://en.wikipedia.org/wiki/Delay_line_memory , http://forum.pcstats.com/showthread.php?t=29132 , http://masterorg.wu.ac.th/source/det...&paths=wu-stsp , http://en.wikipedia.org/wiki/Universal_Media_Disc , http://en.wikipedia.org/wiki/Blu-ray_Disc , http://en.wikipedia.org/wiki/HD_DVD , http://en.wikipedia.org/wiki/Holographic_Versatile_Disc , http://sirinas-mai.blogspot.com/2008...emory-rom.html (¹ MaiHaNaKa) , http://en.wikipedia.org/wiki/VCDHD , "Physic Of The Impossible" by Michio Kaku, 2008 (Textbook) - ʹ˹ѧ ? ҫҹ Asia book Ѻ ըӹǹФʹ㨿ԡѹ ͧǧ˹ [˹һ]

    Тͺسس sailomsaengdaed ¤Ѻ س֡͡Ҽҧ Primary Second Storage ѧաѹѺ Tertiary storage 蹡 Database Ѻ ˹ǡѹ ...

    : 27/09/2552 (10:50 AM)


  2. #2
    Ҫԡ TG striderblue's Avatar
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    ͺسҡѺѺ
    ըԧ ҧͧ͹ѹ

  3. #3
    ͧ TG shadowd's Avatar
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    ͺسѺ

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    Ѥ goodmy's Avatar
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    ʹ

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    Ҫԡ TG 蹾 yunapk48's Avatar
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    Ҫ! ѹѧö٧شҳ 10-100 tb ҡ hdd աʧ龡 hdd 澡§ҧ




  6. #6
    Ѥ siasen's Avatar
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    ͺسҡ·Ѻ

  7. #7
    Ҫԡ TG mindhero's Avatar
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    ըԧ........

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    Ѥ robo2002's Avatar
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    ͺسҡѺ դ繡ͧ¤Ѻ

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    Ҫԡ TG á zamoeal's Avatar
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    ҡѺ ͺسѺ

  10. #10
    Ҫԡ TG sutthavit's Avatar
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    HVD ⤵෾ - -*

    㹢з HDD ѧѲ֧ 10 TB (ǡ֧ͧй ^_^)
    е㹰ҹ ... ͨ仨ͧ繼 ...

  11. #11
    ͧ TG B123K's Avatar
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    ѧ¹Դ .... -*-

    ѡá Floppy Disk Ҵ 8 ѹ .... ҡ CD DVD Blu ray ....... -*-

  12. #12
    ͧ TG niorkungiiz's Avatar
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    ˹ҡ HVD ! ^^

  13. #13
    Ҫԡ TG á sailomsaengdaed's Avatar
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    HDD ,DIsk, CD,DVD ROM
    ѹͤ˹¤ͧ

  14. #14
    Ѥ Hitzuja's Avatar
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    ùФѺ ¤Ѻ §ͧ׹ѹ١ͧѺ
    ҧԧ ͤͧ sailomsaengdaed ҹͤ
    HDD ,DIsk, CD,DVD ROM
    ѹͤ˹¤ͧ
    ^ ͡ҧԧա鹤Ѻ http://en.wikipedia.org/wiki/Computer_data_storage
    Secondary storage in popular usage, differs from primary storage in that it is not directly accessible by the CPU. The computer usually uses its input/output channels to access secondary storage and transfers the desired data using intermediate area in primary storage. Secondary storage does not lose the data when the device is powered down—it is non-volatile. Per unit, it is typically also an order of magnitude less expensive than primary storage. Consequently, modern computer systems typically have an order of magnitude more secondary storage than primary storage and data is kept for a longer time there. In modern computers, hard disk drives are usually used as secondary storage. The time taken to access a given byte of information stored on a hard disk is typically a few thousandths of a second, or milliseconds. By contrast, the time taken to access a given byte of information stored in random access memory is measured in billionths of a second, or nanoseconds. This illustrates the very significant access-time difference which distinguishes solid-state memory from rotating magnetic storage devices: hard disks are typically about a million times slower than memory. Rotating optical storage devices, such as CD and DVD drives, have even longer access times.
    Some other examples of secondary storage technologies are: flash memory (e.g. USB flash drives or keys), floppy disks, magnetic tape, paper tape, punched cards, standalone RAM disks, and Iomega Zip drives.
    The secondary storage is often formatted according to a file system format, which provides the abstraction necessary to organize data into files and directories, providing also additional information (called metadata) describing the owner of a certain file, the access time, the access permissions, and other information.
    ׹ѹ١ͧФѺ ҧԧ ͹Ҷ֧ ROM ͸Ժͧ Primary storage RAM Ѻ Ҥӷ㹢ͤҧػ Secondary storage hard disk drives , Rotating optical storage ( CD DVD ) , flash drives , loppy disks, magnetic tape , paper tape , punched cards , RAM disks , Iomega Zip drives ... ҧǷ͡㹺 ROM աǤ Zip Drive Ѻ ͧɴ¹ФѺ ԴҤǹ¨ѡʹ㨤Ѻ

    աҧ ROM Secondary storage ˹¤ͧѡɳǡѹѺ non-volatile Read-only (Slow write, fast read storage)

    աҧФѺӤѭش س sailomsaengdaed ͡ "CD-ROM ,DVD-ROM ROM" ͤäѺ CD-ROM DVD-ROM ѹ ROM ѧ䧤Ѻͪѹ͡ѹ ROM ...

    ͺس س sailomsaengdaed ¤Ѻ س֡͡Ҽҧ Primary Second Storage ѧաѹѺ Tertiary storage 蹡 Database Ѻ

  15. #15
    ͧ TG kavin's Avatar
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    зͺس ŧعҢ颹Ҵ ͺسҡѺҹ

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