| A | B |
|---|
| Bootable disk | For DOS, a floppy disk that can upload the OS files necessary for computer startup. It must have the two hidden system files IO.SYS and MSDOS.SYS, and also COMMAND.COM. |
| Diagnostic cards | Adapter cards designed to discover and report computer errors and conflicts at POST time (before the computer boots up), often by displaying a number on the card. |
| Diagnostic software | Utility programs that help troubleshoot computer systems. Some DOS diagnostic utilities are CHKDSK and SCANDISK. PC-Technician is an example of a third-party diagnostic program. |
| Documentation | Manuals, tutorials, and Help files that provide information that a user needs in order to use a computer system or software application |
| Electrostatic discharge | (ESD) — Another name for static electricity, which can damage chips and destroy system boards, even though it might not be felt or seen with the naked eye. |
| Ground bracelet | An antistatic wrist strap used to dissipate static electricity. Typically grounded by attaching an alligator clip to the computer chassis or to a nearby ground mat. |
| Ground mat | An antistatic wrist strap used to dissipate static electricity. Typically grounded by attaching an alligator clip to the computer chassis or to a nearby ground mat. |
| Static electricity | Same as Electrostatic Discharge |
| Video driver | A program that tells the computer how to effectively communicate with the video adapter card and monitor. It is often found on a floppy disk that is shipped with the card. |
