1. BOOTING-In computing,booting is a bootstrapping process that starts operating systems when the user turns on a computer system.
2.GUI- in computing, a graphical user interface is a type of user interface that allows users to interact with electronic devices with images rather than text commands.
3. LINUX-is a computer operating system which is based on free open source system
4.MACINTOSH OS-is a series of graphical user interface-based operating systems developed by Apple Inc.
5. MS-DOS-is an operating system for x86-based personal computers or Microsoft Disk Operating System.
6. MULTITASKING-the apparent simultaneous performance of two or more tasks by a computer's central processing unit.
7. NOS-a kind of computer software for running local area networks.
8.OS- is software, consisting of programs and data, that runs on computers, manages computer hardware resources, and provides common services for execution of various application software.
9.SYSTEM SOFTWARE- is computer software designed to operate the computer hardware and to provide a platform for running application software.
10. APPLICATION SOFTWARE-also known as an application or an "app", is computer software designed to help the user to perform specific tasks.
11. UNIX-is a multitasking,multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas macllroy, and Joe Ossana.
12. UTILITY PROGRAMS-A program that performs a specific task related to the management of computer functions, resources, or files, as password protection, memory management, virus protection, and file compression.
13.WINDOWS-is a series of operating system produced by Microsoft.
14.WINDOWS CE-is an operating system developed by Microsoft for embedded systems or Embedded Compact.
15.WINDOWS MOBILE-is a mobile operating system developed by Microsoft that was used in smartphones and mobile devices but by 2011 was rarely supplied on new phones.
16.the differences about MAC OS, WINDOWS CE AND UNIX are. MAC OS is a series of graphical user interface-based operating systems developed by Apple Inc while WINDOWS is a series of operating system produced by Microsoft while UNIX is a multitasking,multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas macllroy, and Joe Ossana.
