Glossary 3CPU(Central Processing Unit) See microprocessor.CRT(Cathode-Ray Tube) The type of video display used in monitors for desktop computers.DDC(Direct Current) The type of current available in the rechargeable battery packs used inportable computers. See also AC.defaultThe factory setting your computer uses unless you instruct it otherwise. For example, whenpowering up, the computer will boot from the default drive.densityThe capacity of information (bytes) that can be packed onto a storage device, such as afloppy disk.device driverA software program that a computer must use to recognize and operate certain hardware,such as a mouse or a video monitor.disk driveA device that stores data on a hard or floppy disk. A floppy disk drive requires a floppy diskto be inserted; a hard disk drive has a permanently encased hard disk.DOS(Disk Operating System) See operating system.DRAM(Dynamic RAM) See RAM.EECC(Error Checking and Correction) A method of detecting and correcting errors.EEPROM(Electrically Erasable Programmable Read-Only Memory) A type of memory device thatstores password and configuration information.EGA(Enhanced Graphics Adapter) A type of video display system that provides medium-resolution text and graphics on TTL monochrome, color, and enhanced color monitors.
