| A | B |
|---|
| break code | a code produced when a computer keyboard is released |
| Bus mouse | a mouse that plugs into a bus adapter card adn has a round, 9 pin mini-DIN connector |
| cluster | one or more sectors that constitute the smallest unit ofspace on a disk for storing data. |
| directory | a dos table that contains file information such as name, size, time, and date of last modification. |
| fat | a table on a disk that tracks the clusters used to contain a file. |
| formatting | to prepare a new floppy disk for use |
| pixel | small dots on a fine horizontal scan line tht are illuminated to create a picture |
| root directory | the main dirctory on a disk |
| rescue disk | a dos disk that can be used to start up a computer |
| undelete | a command that retrieves previously deleted files, |
| xcopy | a faster external dos copy program that can copy subdirectories |
| diskcopy | a command that copies the entire contents of one disk to another |
| erase | another name for the DEL command |
| fragmented | files that have been written to different portions of the disk so that they are not in contiguous clusters |
| make code | a code produced by pressing a computer keyboard |
| master boot record | the record written near the beginning of a floppy disk, containing information about the disk as well as the startup operating system programs |
| recover | a command tht recovers files that were lost because of a corrupted FAT |
| system board mouse | a mouse that plugs into a round port on the system board |
| sector | a large segment of a disk or a single segment of one track |
| track | a cylinder or circular section of a disk |
