Difference between revisions of "Bits Bytes etc"
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==Zetta Byte== | ==Zetta Byte== | ||
| − | Symbol: ZB | + | Symbol: ZB, |
| − | Power : 10^21 | + | Power : 10^21, |
Bytes : 1,000,000,000,000,000,000,000 bytes | Bytes : 1,000,000,000,000,000,000,000 bytes | ||
Revision as of 12:04, 12 September 2018
Contents
Units
https://www.youtube.com/watch?v=9kzCoDFrMGE&list=PLCiOXwirraUCa2MYf_oSM94uvwIGPMZ1q
New Units
Computer Science units are now based around the powers of 10
Powers of 10
The Bit
The Bit is a single binary digit used in computing and is represented using either a 1 or 0. The two values of a single digit act as an On or Off function or True/False and putting them together can result in unique functions as 1 digit can control one variable and another digit can control an entirely different variable. By putting multiple bits together functions become more complex and have more outcomes as if you set one value to true it can lead to another set of values different to what you would get if it was set to false. Putting 8 of theses bits together is called a byte (see pg 2.3)
The Byte
A byte is made up of 8 bits, and larger amounts of data are based around the value of a byte (e.g Gigabyte being 1,000,000,000 bytes).
Kilo Byte
A Kilo Byte is 1000 bytes. It is also a multiple of the byte unit with the prefix kb.
Mega Byte
Giga Byte
Tera Byte
1 TeraByte = 1,000 GigaByte, 10^12 bytes
Peta Byte
Symbol PB Power 10^15
Exa Byte
Symbol: EB Power: 10^18
Zetta Byte
Symbol: ZB, Power : 10^21, Bytes : 1,000,000,000,000,000,000,000 bytes
Yotta Byte
Yottabyte (YB) is a unit of digital information that equals to one septillion (10^24), more precisely to 2^80.
Old Units
Units based around powers of 2, according to the spec you don't need to know these
Powers of 2
A power of two is a number of the form 2n where n is an integer. (e.g. 7).
- PO2 Table.GIF
Kibi Byte
Mebi Byte
Gibi Byte
1 GiB is equal to 2^30. (Two to the power of thirty)
1 GB = 0.931323 GiB
Tebi Byte
A tebibyte is a unit of data storage that equals 2 to the 40th power, or 1,099,511,627,776 bytes. While a terabyte can be estimated as 10^12 or 1,000,000,000,000 bytes, a tebibyte is exactly 1,099,511,627,776 bytes.
