This document defines various units of digital information storage from yottabytes down to yoctobytes. A yottabyte is equal to 10^24 bytes, while a yoctobyte is equal to 10^-24 bytes. In between are units like zettabytes, exabytes, petabytes, terabytes, gigabytes, megabytes, kilobytes, and bytes. Each unit prefix, like kilo, mega, and giga, represents a power of 10 or 1024, with corresponding symbols used to concisely represent the value. These prefixes are part of the International System of Units for standardized measurement of digital information amounts.

1. Measurements units of
Bytes

2. Yottabyte (Y)
● Is a multiple of the unit byte for
digital information
● The prefix 'yotta' indicates
multiplication by the eighth power
of 1000 or 10^24 in th SI
● Therefore one yottabyte is one
septillion bytes. The symbol of the
unit is 'YB'
● 1YB =1000^8 bytes = 10^24 bytes
● A related unit, the Yobibyte (YiB),
using a binary prefix, means
1024^8

3. Zettabyte (Z)
● Is a multiple of the unit byte for
digital information
● The prefix zetta indicates
multiplication by seventh power of
1000 or 10^21 in the SI
● Therefore one Zettabyte is one
sextillion bytes. The symbol is 'ZB'
● 1ZB =1000^7 bytes =10^21 bytes
● A related unit, the zebibyte (ZiB),
using a binary prefiix, means
1024^7 bytes

4. Exabyte (E)
● Is a multiple of the unit Byte
for digital information
● The prefix 'Exa' indicates
multiplication by the sixth
power of 1000 or 10^18 in
the SI
● Therefore one Exabyte is
one quintillion bytes
● 1 EB =1000^6 bytes =
10^18 bytes

5. Petabyte (P)
● Is 10^15 of digital information.
A related unit, the pebibyte
(PiB), using binary prefix is:
1024^5 = 2^50 =
1125899906842624 bytes,
more than 12% larger
● 1PB = 10^15 bytes = 1000 TB
● The prefix 'Peta' indicates the
fifth power of 1000 and means
10^15 in the SI, and therefore
1 petabyte is one quadrillion
bytes

6. Terabyte (T)
● Is a multiple of the unit Byte for
digital information
● The prefix 'Tera' represent forth
power of 1000, and means
10^12 in the SI, and therefore
one Terabyte is one trillion
bytes
● The unit symbol is 'TB'
● 1 TB= 1000000000000 bytes =
10^12 byte =1000 bytes

7. Gigabyte (G)
● Is a multiple of the unit
Byte for digital information
● The prefix Giga means
10^9 in the SI
● Therefore 1 Gigabyte is
1000000000 byte
● The unit symbol for the
Gigabyte is 'GB'

8. Megabyte (M)
● Is a unit prefix in the
Metric System denoting
a factor of one million
● 10^6 = 1000000 bytes
● It was confirmed for
use in the International
System of Units (SI) in
1960

9. Kilobyte (K)
● Is a multiple of the unit for
digital information or
computer storage
● The prefix kilo (k) is
defined as a mutiplier of
10^3
● 1 kilobit = 10^3 bits
=1000 bits
● The kilobit has the unit
symbol 'kbit' or 'kb'

10. Hectobyte (h)
● Hecto (h) is a unit prefix
in the metric system
denoting a factor of
one hundreds (100
bytes)
● It was adopted as a
multiplier in 1795
● The unit symbol in the SI
is the lower case letter
'h'

11. Decabyte (D)
● Deca is a prefix in metric
system, also a numerical
prefix, denoting a factor
of ten
● It's symbol ''ten'' is the
only SI prefix that ses
more than one character
● Was a part of the original
Metric System in 1795
● 1000^1= 10^1 = 10 bytes

12. Byte (B)
● Is a unit of digital information in
computing and
telecommunication that most
commonly consist of eight bits
● Historically, the byte was the
number of beats used to
enconde a single character of
a text in a computer and for
● This reason is the smallest
addressable unit of memory in
many computers arquitectures

13. Decibyte (d)
● Deci (symbol 'd') is a prefix in
the SI denoting a factor of one
tenth
● Adopted in 1795
● It's most frequent use is in the
non-SI unit
● The decibel is used to measure
sound intensity (relative to a
reference) and many other
ratios

14. Centibyte (c)
● Centi (symbol 'c') is a prefix
in the metric system
denoting a factor of one
hundred
● It was adopted in 1795, the
prefix comes from the Latin
and means hundred
● It is mainly used with the
meter to express lengths in
centimeter, a common unit
of length in centimeters

15. Milibyte (m)
● Mili (simbol 'm') is a
prefix in the SI denoting
a factor of one
thousandth 10^-3
● It was adopted in 1795
● The prefix come from
the Latin 'mille' meaning
one thousand
● It can be a snow cristal

16. Micro (μ)
● Micro (Symbol 'μ') is a prefix in
the metric system denoting a
factor of 10^-6 (one millionth)
● It was confirmed in 1960
● The prefix comes from the
Greek 'mikrós' meaning 'small'
● The symbol for the Micro is the
letter 'mu'
● Is the only SI prefix which uses
a character not from the Latin

17. Nano (n)
● Nano (symbol 'n')is an SI
prefix meaning one billionth
● Used primarly with the metric
system, this prefix denotes a
factor of 10^-9
● It is frecuently encountered
in science and electronics
for prefixing units of time
and length

18. Pico (p)
● Pico (symbol 'p') is a prefix
in the metric system
denoting one trillionth, a
factor of 10^-12
● Derived from the Spanish
pico meaning peak, beak,
bit this was one of the
original 12 prefixes
● Defined in 1960 when the
SI was established

19. Femto (f)
● Femto (symbol 'f') is a prefix
in the metric system
denoting a factor of 10^-15
● Adoted by the 11th
Conférence Générale des
Poids et Mesures
● It was added in 1964 to the
SI
● It is derived from the Danish
word femten, meaning
'fifteen'

20. Atto (a)
● Atto (symbol 'a') is a prefix in
the metric system denoting a
factor of 10^-18
● The unit multiple was
adoptedat the 12th
Conférence Généale des
Poids et Measures (CGPM)
in the Resolutions
● It is derived from the Danish
word, 'atten' meaning
'eighteen'

21. Zepto (z)
● Zepto (symbol 'z') is a
prefix in the metric system
denoting a factor of 10^-
21
● Adopted in 1991, it
comes from the Latin
'septem', meaning 'seven'
since it is equal to 1000^-
7

22. Yocto (y)
● Yocto (symbol 'y') is a prefix in the
metric system denoting a factor of
10^-24
● It was adopted in 1991 by the
General Conference on Weights
and Measures
● It comes from the Latin/Greek
'octo' meaning 'eigth' οκτώ
because it is equal to 1000^-8
● As of 2014, yocto is the smallest
official SI preffix
● It can be used to state a subatomic
particle's mass