| A | B |
|---|
| IDE | Can connect up to 2 devices. Contains all the necessary circutry in the drive itself. |
| EIDE | Allows for 2 IDE channels that can each support 2 devices. |
| AT Attachment. (ATA) | Commonly known as IDE, the "AT" refers to the IBM AT computerwhere this interface was first used. |
| ATA - 33 | Doubles the data transfer rate of ATA to 33 Mbps. AKA: Ultra IDE |
| SCSI | Usually used with CD-ROM and hard drives, but commonly with scanners and printers. |
| Millisecond | One thousandth of a second. Usually used to measure hard drive speed. |
| System Hang | When a program fails and locks up without even giving an error message. Usually blocks all input to the program. |
| POST | Performs the necessary diagnostic and hardware/software/firmware tests during boot-up. A group of ROM BIOS diagnostic tests. |
| Cold Boot | Turning on the computer from an off position or turning it off then waiting a few seconds before turning it on again. |
| Warm Boot | Restarting a computer by using Ctrl+Alt+Delete. |
| Boot disk | A write protected floppy containing all the boot up and system files needed to load the operating system. |
| Boot Sector | Section of Hard drive that contains all the data needed to load the operating system. |
| Safe Mode | Automatically loaded if Windows crashes during boot up. Can be accessed at any time by pressing F8 during start - up. Loads only the necessary drivers and nothing else. |
| Scanner | A device used to copy an image from a physical source to a computer. |
| LPT1 | The MS-DOS label for parallel port 1. |
| COM1 | MS-DOS label for serial port 1. |
| MTBF | A time in hours which the computer predicts when the next time will be that a device fails. |
| Drive Interface | A collection of logical and electrical connections between a hard drive and PC. |
| LUN | LUN is a unique identifier for sub-devices assigned to a single SCSI ID. |
| Display Adapter | A device that converts information in memory to video output to a display |
| VGA | The minimum standard for PC video display, which originated with IBM's PS/2 models in 1987. |
| AT Commands | The modem command set by the Hayes Company for use on its modems and now used on most modems. |
| Asynchronous | A method of communication transfers data w/out an specific timing mechanism between the two. |
| 8 bit bus scsi | 50 pin connector |
| 16 bit bus | 68 pin |
| 25 pin | macintosh |
| SCSI 1 | 0-7 |
| SCSI 3 | 0-15 |
| Ultra wide SCSI | 20mhz/40Mbps |
| Ultra2 wide SCSI | 40Mhz/80Mbps |
| Ultra DMA | 33, 66, or 100Mbps |
