Computer storage Units

Computer storage Units

Basic introduction
Computer storage units are generally indicated by B,KB,MB,GB,TB,PB,EB,ZB,YB,BB, and there will be larger storage units in the future.
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Conversion relationship
The relationship between them is:
Bit bit (binary Digits): holds a binary number, which is 0 or 1, the smallest storage unit.
The byte byte:8 is a bits of one byte (B), the most commonly used unit.
1KB (kilobyte KB) =1024b,
1MB (megabyte megabyte abbreviated as "Mega") =1024KB,
1GB (Gigabyte gigabyte, also known as "gigabit") =1024MB,
1TB (Trillionbyte trillion bytes) =1024GB, where 1024=2^10 (2 of 10),
1PB (petabyte petabyte Word ticks byte) =1024TB,
1EB (Exabyte exascale bytes) =1024PB,
1ZB (zettabyte 10 trillion byte ze byte) = 1024x768 EB,
1YB (yottabyte 100 million bytes yao byte) = 1024x768 ZB,
1BB (brontobyte 100 billion bytes) = YB.
Note: "Mega" is the millions quantity unit.
Attached: The full name of the unit and transliteration
Yotta, [Yao] it, Y. 10^21,
Zetta, [ze] it, Z. 10^18,
Exa, [AI] sa, E. 10^15,
PETA, [Pat] it, P. 10^12,
Tera, [Tai] LA, T. 10^9,
Giga, [Kat] Cafe, G. 10^6,
Mega, [Mega],m. 10^3
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Interpreting conversion rate
Explain why the rate of the computer storage unit is 1024 instead of 1000.
Because computers are now binary, so that they calculate units, only 2 of the integer power can be very convenient for computer computing, because the computer's internal circuit work has high and low levels of two States. Therefore, the binary is used to represent the signal (control signal and data) for computer identification. And people are accustomed to using 10, so the memory vendors use 1000 for the rate of input. The result is that the actual capacity is less than the nominal capacity, but it is legal. 1024 is 2 of 10, because if taken large, not close to 10 of the whole number of square, inconvenient people calculate, take small, the rate is too low, the unit to more to meet the demand. So take 2 of 10 times just right.
Compute example: A hard disk with a nominal size of 100GB, with an actual capacity of 100x1000x1000x1000 bytes/1024X1024X1024≈93.1GB
Visible product capacity shrinkage as long as the actual capacity of the calculation to meet the results (upper and lower errors should be within 1%), you buy is genuine, not cheated, in business is allowed.