CIS 1200 Lecture Notes - Lecture 5: File Explorer, System Restore, Defragmentation

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 1200
• Professor: John Saville

Document Summary

Operating system (os): a group of programs that controls how the computer system functions: 3 primary functions. Provides consistent means for application software to work with cpu. Responsible for management, scheduling and coordination of tasks. User interface: program that allows user to communicate with the system (i. e. desktop, icons and menus); first interaction with os. Icons: pictures that represent an object such as a software application or a file of folder: menu: list of different commands. Utility program: a small program that performs many of the housekeeping tasks for computer (i. e. system maintenance and file compression) Used to be designed for single user performing one task at a time (single-user/task os: multitask: modern os allows single user to perform more than one process at a time. Real time operating system (rtos or embedded system): required to perform repetitive series of a specific tasks in a precise amount of time otherwise it is useless; minimal user interaction.