| A | B |
|---|
| internal command | operating systems that remains in memory |
| program manager | creates the Windows program groups and allows you to select the program you want |
| terminate and stay resident program | program used for desktop accessory purposes with a single program-execution operating system |
| accessory | a small "application-ette" |
| time slicing | the process of devoting a portion of processor time to each of several tasks |
| operating system | software that controls the operation of the computer |
| virtual memory | refers to the use of disk space to simulate memory |
| Windows | an extension to DOS that provides a graphic user interface |
| forground task | the task which receives processor time priority, usually the one with which the user is interacting |
| configuring | refers to the process of making the desired match between logical and physical computer devices |
| tree structure | a type of directory structure similar to the scheme of a file cabinet |
| Windows NT, Windows 95, and OS/2 | complete multitasking PC operating systems that provides a graphic user interface |
| backing up | the process of copying the data to another medium so that a duplicate is available for use should the original copy be destroyed or become unsuable |
| multitasking | an operating system that can juggle more than one action at a time |
| single-program execution | operating system that can execute just one application program at a time |
| hierarchical directory structure | a structure used by most operating system in which the directory is arranged as an inverted tree with multiple branches |
| decryption | the decoding of data |
| executive | portion of the operating system that acts as the manager of all other operating system functions and provides the interface between user demands and the capabilities of the other parts of the operating system |
| formatting | prepares the disk surface for storing data |
| finder | a shell or application used by the Macintosh to launch programs, show the contents of disks, and move, copy, or delete files |
| file manager | used in Windows to look at directories and to copy, move, and erase files |
| physical device | each of the actual peripherals attached to a computer |
| external commands and transients | the instructions to carry out functions or commands that reside on a disk and are loaded into memory as a program and executed |
| restoring | the process of copying data from the backup media to a hard disk after a failure has been rectified |
| extensions | an addition to the Macintosh operating system to provide additional functionality |
| encryption | the coding of data |
| command line entry | a method in which commands are entered by typing them on a keyboard |
| System 7 | the multitasking, current version of Apple's operating system for the Macintosh |
| drivers | the term usually used in the PC word to refer to extensions to the operating system |
| Windows for Workgroups | a version of Windows that runs with DOS and provides built-in networking |
| background task | the task that the computer works on when the foreground task is not active |
| DOS | the operating system originally used on IBM PCs |
| logical device | devices that operating systems are frequently designed to use on a generic basis |
