why do we have a silent k in english
Silent k In Old English, ⟨k⟩ and ⟨g⟩ were not silent in these words. Cognates in other Germanic languages show that the ⟨k⟩ was probably a voiceless velar plosive in Proto-Germanic (compare German Knecht to knight, Knoten to knot, etc. where the initial ⟨k⟩ is not silent); likewise, ⟨g⟩ was probably a voiced velar plosive (compare German Gnom to gnome, Gneis to gneiss, etc. where the initial ⟨g⟩ is not silent).
Kilobyte The International System of Units (SI) defines the prefix kilo as 1000 (103); per this definition, one kilobyte is 1000 bytes.[1] The internationally recommended unit symbol for the kilobyte is kB.[1]