| A | B |
| IDE | Integrated drive electronics. A method of disk drive manufacturing. |
| EIDE | Allows for two IDE channels that can support two devices. |
| AT Attachment | The AT refers to IBM AT computer where this interface was first used. |
| ATA-33 | An extension to the IDE interface, that will effectively double the top data transfer to 33Mbps. |
| SCSI | Small computer interface standard interface for hard drives and CD-ROM drives, it cna be used for scanners too. |
| Millisecond | One thousandth of a second usually used to measure the access speed of hard drives. |
| System Hang | When a program fails it has the opportunity to display an error or diagnostic message, only works if application doesnt work. |
| POST | power on self test. a group of ROM Bios diagnostics programs to check the system at boot up. |
| Cold Boot | To tuen on a computer or to restarta computer by turning it off, waiting a few seconds and the turning it back on again. |
| Warm boot | To restart a computer by pressing ctrl-alt-del. |
| Boot Disk | A write-protected folppy disk that contains the computers sysmte and start-up files. |
| Boot Sector | A portion of a disk the coded instructions for the operating system to start the computer. |
| Safe mode | This is a Win 95 mode that is automatically loaded if windows crashes during bootup. |
| Scanner | This device is used for copying image from a physical source into a computer. |
| LPT1 | The label used in MS-Dos assigned to parallel port. |
| COM1 | The label used in MS-DOS assigned to serial port. |
| MTBF | Meen Time between failures shown in hours can predict when a component will fail. |
| Drive Interface | The interface where connections are made to connect a drive to a computer system. |
| LUN | Logic Unit Number, a three digit number on a SCSI bus to determine the different devices on SCSI bus up to eight. |
| Display Adapter | A board that plugs into a personal computer to give it display capabilities. The display capabilities of a computer, however, depend on both the logical circuitry (provided in the video adapter) and the display monitor. |
| VGA | video graphics array, a graphics display system for PCs developed by IBM. VGA has become one of the de facto standards for PCs. In text mode, VGA systems provide a resolution of 720 by 400 pixels. In graphics mode, the resolution is either 640 by 480 (with 16 colors) or 320 by 200 (with 256 colors). |
| AT commands | Short for advanced technology, the AT is an IBM PC model introduced in 1984. It includes an Intel 80286 microprocessor, a 1.2MB floppy drive, and an 84-key AT keyboard. |
| Asynchronous | Not synchronized; that is, not occurring at predetermined or regular intervals. The term asynchronous is usually used to describe communications in which data can be transmitted intermittently rather than in a steady stream. |