2 GlossaryboardPrinted circuit board. Board onto which computer components are solderedand thin wires are printed to connect the components.bootTo start up a computer. See cold boot and warm boot.busAn electronic circuit within a computer used for transmitting data or electri-cal power from one device to another.byteGroup of eight contiguous bits.C CardBusA new 32-bit high-performance bus defined by the new PC Card Standardand released by the PCMCIA standards body and trade association. CardBus offers wider and faster 32-bit bus and bus mastering operation for im-proved adapter performance and can operate at speeds up to 32 MHz.CD audioAlso called digital audio, uses the same format as conventional music CDs.CD audio sounds have been digitized at a high sampling rate.CD-ROM readerA computer-controlled device that reads high-capacity optical discs and sendsthe output to the computer.clockElectronic timer used to synchronize computer operations.CMOSComplementary Metal Oxide Semiconductor. A chip that contains nonvola-tile memory in the Versa. CMOS is backed up by an internal lithium batterythat preserves clock/calendar data and system configuration parametersstored in CMOS.
