Units of Computer Memory Measurements

Michael Amon

Michael Amon

JF-Expert Member
Dec 22, 2008
8,775
3,610
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!!!
 
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:
UnitEquivalent
1 kilobyte (KB)1,024 bytes
1 megabyte (MB)1,048,576 bytes
1 gigabyte (GB)1,073,741,824 bytes
1 terabyte (TB)1,099,511,627,776 bytes
1 petabyte (PB)1,125,899,906,842,624 bytes

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.
 
Young Master said:
sasa mkuu mbona unchanganya physics, computer na biology kwa wakati mmoja?
Click to expand...

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.
 
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?
 
Ndumbayeye said:
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?
Click to expand...

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.
 
378194_514704548544568_1898254413_n.jpg


Mkuu Young_Master
 
Last edited by a moderator:
Swali;
Kwanini external hard disk ya 500 GB kwa mfano inaonekana 465 GB total size kwenye computer?
 
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