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Units of Computer Memory Measurements

Discussion in 'Tech, Gadgets & Science Forum' started by Michael Amon, Aug 21, 2012.

  1. Michael Amon

    Michael Amon Verified User

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    1 Bit = Binary Digit
    8 Bits = 1 Byte
    1024 Bytes = 1 KB (Kilo Byte)
    1024 KB = 1 MB (Mega Byte)
    1024 MB = 1 GB(Giga Byte)
    1024 GB = 1 TB(Terra Byte)
    1024 TB = 1 PB(Peta Byte)
    1024 PB = 1 EB(Exa Byte)
    1024 EB = 1 ZB(Zetta Byte)
    1024 ZB = 1 YB (Yotta Byte)
    1024 YB = 1 (Bronto Byte)
    1024 Brontobyte = 1 (Geop Byte)

    Geop Byte is The Highest Memory Measurement Unit!!!
     
  2. MziziMkavu

    MziziMkavu JF-Expert Member

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    What are bits, bytes, and other units of measure for digital information?

    A bit is a binary digit, the smallest increment of data on a computer. A bit can hold only one of two values: 0 or 1, corresponding to the electrical values of off or on, respectively.

    Because bits are so small, you rarely work with information one bit at a time. Bits are usually assembled into a group of eight to form a byte. A byte contains enough information to store a single ASCII character, like "h".

    A kilobyte (KB) is 1,024 bytes, not one thousand bytes as might be expected, because computers use binary (base two) math, instead of a decimal (base ten) system.

    Computer storage and memory is often measured in megabytes (MB) and gigabytes (GB). A medium-sized novel contains about 1 MB of information. 1 MB is 1,024 kilobytes, or 1,048,576 (1024x1024) bytes, not one million bytes.

    Similarly, one 1 GB is 1,024 MB, or 1,073,741,824 (1024x1024x1024) bytes. A terabyte (TB) is 1,024 GB; 1 TB is about the same amount

    of information as all of the books in a large library, or roughly 1,610 CDs worth of data. A petabyte (PB) is 1,024 TB. Indiana University is now building storage systems capable of holding petabytes of data. An exabyte (EB) is 1,024 PB. A zettabyte (ZB) is 1,024 EB. Finally, a yottabyte (YB) is 1,024 ZB.


    Many hard drive manufacturers use a decimal number system to define amounts of storage space. As a result, 1 MB is defined as one million bytes, 1 GB is defined as one billion bytes, and so on. Since your computer uses a binary system as mentioned above, you may notice a discrepancy between your hard drive's published capacity and the capacity acknowledged by your computer. For example, a

    hard drive that is said to contain 10 GB of storage space using a decimal system is actually capable of storing 10,000,000,000 bytes. However, in a binary system, 10 GB is 10,737,418,240 bytes. As a result, instead of acknowledging 10 GB, your computer will acknowledge 9.31 GB. This is not a malfunction but a matter of different definitions.

    We count in base 10 by powers of 10:
    10[SUP]1[/SUP] = 10 10[SUP]2[/SUP] = 10*10 = 100 10[SUP]3[/SUP] = 10*10*10 = 1,000 10[SUP]6[/SUP] = 1,000,000Computers count by base 2:
    2[SUP]1[/SUP] = 2 2[SUP]2[/SUP] = 2*2 = 4 2[SUP]3[/SUP] = 2*2*2 = 8 2[SUP]10[/SUP] = 1,024 2[SUP]20[/SUP] = 1,048,576So in computer jargon, the following units are used:
    [TABLE="class: noborder"]
    [TR]
    [TH="align: left"]Unit[/TH]
    [TH="align: left"]Equivalent[/TH]
    [/TR]
    [TR]
    [TD="align: left"]1 kilobyte (KB)[/TD]
    [TD="align: left"]1,024 bytes[/TD]
    [/TR]
    [TR]
    [TD="align: left"]1 megabyte (MB)[/TD]
    [TD="align: left"]1,048,576 bytes[/TD]
    [/TR]
    [TR]
    [TD="align: left"]1 gigabyte (GB)[/TD]
    [TD="align: left"]1,073,741,824 bytes[/TD]
    [/TR]
    [TR]
    [TD="align: left"]1 terabyte (TB)[/TD]
    [TD="align: left"]1,099,511,627,776 bytes[/TD]
    [/TR]
    [TR]
    [TD="align: left"]1 petabyte (PB)[/TD]
    [TD="align: left"]1,125,899,906,842,624 bytes[/TD]
    [/TR]
    [/TABLE]

    Note:
    The names and abbreviations for numbers of bytes are easily confused with the notations for bits. The abbreviations for numbers of bits use a lower-case "b" instead of an upper-case "B". Since one byte is made up of eight bits, this difference can be significant. For

    example, if a broadband Internet connection is advertised with a download speed of 3.0 Mbps, its speed is 3.0 megabits per second, or 0.375 megabytes per second (which would be abbreviated as 0.375 MBps). Bits and bit rates (bits over time, as in bits per second [bps])

    are most commonly used to describe connection speeds, so pay particular attention when comparing Internet connection providers and services.
     
  3. bombu

    bombu JF-Expert Member

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    Aug 22, 2012
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    Nyie watu naona mnataka kucrack my brain, lol.
    Haya makitu yalinishinda mie tangu A level, eh eh....
     
  4. Kiranga

    Kiranga JF-Expert Member

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    Gram moja ya DNA ina information kiasi gani?
     
  5. Mr Rocky

    Mr Rocky JF-Expert Member

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    Ahhh Young Master haya mambo bana haya yalishatushinda ila safi sana kwenye kuongeza ujuzi aise
     
    Last edited by a moderator: Jan 4, 2016
  6. nxon

    nxon JF-Expert Member

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    duh nlijua mwisho terrebyte kumbe kuna zaidi!
     
  7. m

    mtanzania1989 JF-Expert Member

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    Hii imekaa vema ,ma specialist wa ubongo watuambie binadamu mwenye IQ ya kawaida ana memory kiasi gani ?
    na ni percentage ngapi inatumika ful ?
     
  8. Michael Amon

    Michael Amon Verified User

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    Yep Kuna zaidi mkuu.
     
  9. Michael Amon

    Michael Amon Verified User

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    Umejuaje? Ngoja nitume bruteforce attack...ili niuchakachue ubongo wako nijue kila unalowaza juu yangu.
     
  10. RAU

    RAU Member

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    Thanks, i did'nt know before about PB, EB, ZB,YB,BB and GB
     
  11. Kiranga

    Kiranga JF-Expert Member

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  12. Michael Amon

    Michael Amon Verified User

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    sasa mkuu mbona unchanganya physics, computer na biology kwa wakati mmoja?
     
  13. Kiranga

    Kiranga JF-Expert Member

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    Wapi nilipochanganya?

    Mie nimeangalia zote zinapokutana katika "Information Technology".

    Kama hujajua kwamba mwili wako unabeba information ambazo zinaweza kuwa quantifiable in the units above inabidi ujifunze hilo.
     
  14. Ndumbayeye

    Ndumbayeye JF-Expert Member

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    A bit can hold only one of two values: 0 or 1, corresponding to the electrical values of off or on, respectively.

    hapo sasa , ufafanuzi mkuu hiyo maana yake ni nini?
     
  15. Michael Amon

    Michael Amon Verified User

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    Anaposema a bit can contain only two values ether 0 or 1 anamaanisha kuwa kwanza kabisa computer hai-understand language ambayo sisi tunaiandika yenyewe inaelewa machine language whicha is the language which can only be understood by the computer. machine language hiyo haitumii herufi, namba au alama ambazo sisi tunazisafahamu bali inatumia binary digits ambayo ni either iwe 0 or 1. herufi au tarakimu yoyote utakayotype katika computer yako computer yako haitoelewa kama umetype hiyo herufi bali yenye yenyewe itaelewa kuwa umetype binary code. process ya kuntraslate from language uliyoitype tu machine hufanywa na compiler or interpreter.

    na ili herufi au tarakimu hiyo iweze kuoneakana katika computer yako lazima iwe na binary codes 8 either 0 or 1 na zikishafika binary code 8 haiwezi kuwa a bit tena kwa sababu a bit ni binary code moja tu ether 0 or 1. Mfano: wewe ukitype 2, computer yako haitaelewa kama umetype mbili na badala yake itaelewa kuwa umetype 00000010.

    Kwa kuhitimisha naweza kusema kuwa herufi au tarakimu yoyote utakayotype kwenye computer yako ina ukubwa wa one byte.
     
  16. MziziMkavu

    MziziMkavu JF-Expert Member

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    Last edited by a moderator: Jan 4, 2016
  17. bombu

    bombu JF-Expert Member

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    Hehehee, hii technique yako ni high definition, lol. wacha nisubiri feedback
     
  18. KXY

    KXY JF-Expert Member

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    Swali;
    Kwanini external hard disk ya 500 GB kwa mfano inaonekana 465 GB total size kwenye computer?
     
  19. Michael Amon

    Michael Amon Verified User

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    Sio High Definifion tu yaani hii 1080p High Definition plus 3D
     
  20. Michael Amon

    Michael Amon Verified User

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    Ya kweli haya mkuu MziziMkavu?
     
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