292 Glossaryunderstand what effect these settings have on the computer, do not change them. Alsoreferred to as system setup.bit — The smallest unit of data interpreted by your computer.Blu-ray Disc™ (BD)— An optical storage technology offering storage capacity of upto 50 GB, full 1080p video resolution (HDTV required), and as many as 7.1 channelsof native, uncompressed surround sound.Bluetooth® wireless technology — A wireless technology standard for short-range (9m [29 feet]) networking devices that allows for enabled devices to automaticallyrecognize each other.boot sequence — Specifies the order of the devices from which the computerattempts to boot.bootable media — A CD, DVD, or floppy disk that you can use to start yourcomputer. In case your hard drive is damaged or your computer has a virus, ensure thatyou always have a bootable CD, DVD, or floppy disk available. Your Drivers andUtilities media is an example of bootable media.bps — bits per second — The standard unit for measuring data transmission speed.BTU — British thermal unit — A measurement of heat output.bus — A communication pathway between the components in your computer.bus speed — The speed, given in MHz, that indicates how fast a bus can transferinformation.byte — The basic data unit used by your computer. A byte is usually equal to 8 bits.CC — Celsius — A temperature measurement scale where 0° is the freezing point and100° is the boiling point of water.cache — A special high-speed storage mechanism which can be either a reservedsection of main memory or an independent high-speed storage device. The cacheenhances the efficiency of many processor operations.L1 cache — Primary cache stored inside the processor.L2 cache — Secondary cache which can either be external to the processor orincorporated into the processor architecture.carnet — An international customs document that facilitates temporary imports intoforeign countries. Also known as a merchandise passport.CD-R — CD recordable — A recordable version of a CD. Data can be recorded onlyonce onto a CD-R. Once recorded, the data cannot be erased or written over.
