Greetings!
Good day everyone please have time to study because we are going to have a Weekly test on Tuesday (August 14, 2023) I already gave you a hard copy last meeting so that you could study from Lesson 1, 2 and 3 and you may download the ppt below for your convenient. Thank you and see you in my class.
Lesson 3: Operating System
What is an Operating System?
Is the important program that runs on a computer.
The OS manages and control a computer's activity.
Popular operating system for general-purpose computers;
* Windows
* Mac OS
* Linux
Function of OS
* Providing a user interface
* Running application
* Support for built in utility
* Control to the computer hardware
Components of OS
* Process Management
* Memory management
* I/O device management
* Network management
* User interface
Types of OS
* Single user, single task
This type of operating system only has to deal one person at a time,
running one user application at a time.
example: Nokia mobile phone (Symbian), Palm OS- hand held computers.
* Single user, multi-tasking
a. Windows - allows user to perform one or more than one task at a time
-Commonly as; MS windows and Apple Macintosh
-Windows is a series of operating systems developed by Microsoft
each version of windows includes graphical user interface, with desktop that allows users to view files and folder.
b. Android OS now a days is a Single user, multi-tasking because of its multi-tasking features.
c. Macintosh -OS X is version 10 of the Apple Macintosh operating system.
-OS X was described by apple as its first complete revision of the previous version OS 9, with a focus on modularity so that future changes would be easier to incorporate.
- Written in C++, C. Objective -C
Operating System interface
* Command line interface
* Graphic user interface
Advantages of OS
* Easy to use
* User friendly
* Intermediate between all hardware's and software of the system.
* No need to know any technical languages
* It’s the platform all programs.
Disadvantages
* If any problems affected in OS, you may lose all the contents which have been stored already
* Unwanted user can use your own system. (Wireless desktop) and computer hacking.
Check-Point
1. What is an Operating System?
2. What are the 3 prominent operating systems for general-purpose computers?
3. What are the functions of an Operating system.
4. Name the 2 types of OS.
5. Name two (2) Operating system interface.
6. Name the advantage and disadvantages of an operating system.
Thank you and God bless!
