278. GlossaryATA (Advanced Technology Attachment) – The official name that theAmerican National Standards Institute (ANSI) uses for what the computerindustry calls Integrated Drive Electronics (IDE) – which is the standardelectronic interface used between a computer motherboard's data paths, orbus, and the computer's disk storage devices.Authoring – Creation, combination and setup of various files for a DVD-Video, DVD-ROM or audio disc. This includes audio, video, graphics and textfiles.Backup – (1) The act of creating at least one additional copy of data onto adifferent (and safe) storage device from where it can be retrieved at a latertime if needed. (2) A copy of a file, directory, or volume on a separate storagedevice from the original, for the purposes of retrieval in case the original iserased, damaged, or destroyed.Bit – The smallest measure of computerized data, either a 1 or a 0. Eightbits equal one byte, or one character.Block – A very small section of the storage media comprised of one or moresectors. A block is the smallest amount of space allocated on a drive for datastorage. By default, a sector of data consists of 512 bytes.Buffer – RAM cache that is faster than the data that is being delivered.Buffers are used so data may be stored and delivered to the receiving item asit is needed.Buffer Underrun – A condition when the drive’s buffer runs out of datawhile the CD-R/RW or DVD-R/RW media is still being written. The recording ofa CD/DVD is a system-intensive process, and the recorder needs a constantstream of data. A buffer underrun occurs when the stream to the recorder isnot fast enough to keep the recorder’s buffer full, causing the recording toabort.Bus – Electronic links that enable data to flow between the processor, RAMand extension cables (peripherals).Byte – A sequence of adjacent binary digits, or bits, considered as a unit, 8bits in length. There are 8 bits in 1 byte. See also MB (Megabyte) or GB(Gigabyte).