Although the prefix 
kilo- means 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 (2 10) bytes or
Kaynak: Kilobytekilo- , a prefix meaning a thousand. Kilo, Espoo , a district of Espoo, Finland. Kilo railway station , a commuter rail network in Kilo, Espoo
Kaynak: Kilo The binary prefix  kibi , a contraction of "
kilo- , binary  equivalent," denotes the base-ten number 1024, the round binary number closest
Kaynak: KibibyteFor example, 
kilo- denotes a multiple of a thousand and milli- denotes a multiple of a thousandth; hence there are one thousand
Kaynak: International System of UnitsIt is designed to withstand a 20 
kilo-ton nuclear blast, a 2 
kilo-ton conventional bombing and also EM pulse  in event of an attack The
Kaynak: Heng Shan Military Command Centerkilometer; SI  symbol: km) is a unit  of length  in the metric system , equal to one thousand metre s (
kilo-  being the SI prefix  for 1000).
Kaynak: KilometreThe prefixes of the metric system , such as 
kilo-  and milli- , are well known examples.  These represent multiplication by powers  of ten
Kaynak: Unit prefixThe prefix 
kilo- , for example, may be added to gram to indicate multiplication by one thousand; one kilogram is equal to one thousand
Kaynak: Metric prefixconjunction with an SI prefix  such as 
kilo-  (kbit/s or kbps), mega-  (Mbit/s or Mbps), giga-  (Gbit/s or Gbps) or tera-  (Tbit/s or Tbps).
Kaynak: Bit rate