The kilobyte is a multiple of the unit byte for digital information. The International System of Units (SI) defines the prefix kilo as 1000 (10³); therefore one kilobyte is 1000 bytes. The unit symbol for the kilobyte is kB. In some fields of information technology kilobyte has traditionally also been used to denote 1024 (2¹⁰) bytes, which arises from binary exponentiation common to digital circuitry. In this context the unit symbol K or KB has been common.

Definitions and usage

1000 bytes

In the International System of Units (SI) the prefix kilo- means 1000 (10³); therefore one kilobyte is 1000 bytes in this system. The unit symbol is kB.

This is the definition recommended by the International Electrotechnical Commission (IEC). This definition, and related definitions of prefixes mega- = 1000000, giga- = 1000000000, etc., are used for data transfer rates in computer networks, internal bus, hard drive and flash media transfer speeds, and for the capacities of most storage media, particularly hard drives,flash-based storage, and DVDs. It is also consistent with the other uses of the SI prefixes in computing, such as CPU clock speeds or measures of performance.

This articles lists and describes characters from the BBC and Alliance Atlantis-produced children's television series Ace Lightning, which involved characters from a video game materialising in a small American town. The series was told from the point of view of Mark Hollander, a British teenager who is enlisted as the sidekick of superhero of Ace Lightning and do battle against Lord Fear and his minions. The series combined live actors with computer animated characters.

Protagonists

The series' protagonists were its principle teenage cast, and a group of superheroes known as the Lightning Knights, who come from the game world the Sixth Dimension. The main character is Mark Hollander, who shares the role of protagonist with Ace Lightning.

Teenage Protagonists