The document discusses operating systems. It defines an operating system as the most important software that runs on a computer and manages all the hardware and software. It discusses the main parts and functions of an operating system including managing the processor, memory, devices, interfaces for applications and users. It provides examples of common operating systems like Windows, Linux, Unix, and MacOS. It also discusses the different types of operating systems for different uses like real-time, single-user, and multi-user systems.

1. Liceo Secretarial Bilingüe
Technology
Miss Celeste Lemus
WEB QUEST
Ma. Isabel Cabrera
Lesly Dubón
Ma. Isabel López
Alejandra Rubio

2. General Facts of Operating Systems
• The purpose of an operating system is to provide an
environment in which a user can execute programs in
a convenient and efficient manner.

3. Definition of Operating System
• An operating system is the most important
software that runs on a computer. It is a large
program made up of many smaller programs.

4. Parts of an operating system
• ROM and RAM are very important to the OS.
Part of a computer's operating system is built into
ROM. That part contains the most essential
programs that the computer needs in order to run
correctly. It is responsible for waking up the
computer when you turn it on to remind it of all
the parts it has and what they do.

5. Examples of OS
• DOS (Disk Operating System)
• UNIX
• LINUX
• Windows NT
• Windows 2000
• MACINTOSH (often called "the Mac")

6. Function of an Operating System
• It manages all of the software and hardware on the
computer. The operating system coordinates that the
programs running access your CPU , to make sure
that each program gets what it needs.

7. Types of operating systems
There are four general types of operating systems.
Their use depends on the type of computer and the type
of applications that will be run on those computers.
• Real-time operating systems (RTOS) are used to
control machinery, scientific instruments, and
industrial systems.

8. • Single-user, single-task operating systems
allow one user to do one thing at a time.

9. • Single-user, multi-tasking operating systems
allow a single user to simultaneously run
multiple applications on their computer. This is
the type of operating system found on most
personal desktop and laptop computers.

10. • Multi-user operating systems allow multiple
users to simultaneously use the resources on a
single computer.

11. Example of Single-user, multi-tasking operating systems

12. Software for an Operating System
• Processor management. The operating system needs to
allocate enough of the processor's time to each
process and application so that they can run as
efficiently as possible. This is particularly important
for multitasking.

13. • Memory storage and management. A computer
has four general types of memory: high-speed
cache, main memory, secondary memory, and disk
storage. The operating system must balance the
needs of each process with the different types
of memory available.

14. • Device management. Most computers have
additional hardware connected to them. These
devices require special programs that translate
the electrical signals sent from the operating
system to the hardware device. The operating
system manages the input to and output from the
computer.

15. • Application interface. As software developers
write applications, they can insert these API
functions in their programs. As the operating
system encounters these API functions, it takes
the desired action, so the programmer does not
need to know the details of controlling the
hardware.

16. • User interface. The user interface sits as a
layer above the operating system. It is the part
of the application through which the user
interacts with the application.

17. Examples of Software of OS
• Windows
• Linux
• Unix
• MacOS

18. Video about operating systems
• It’s an argument nearly as old as the home computer itself. It
breeds hatred between friends and can cause all out brawls in
the IT room. Of course we are talking of the ongoing battle
between Macs and PCs