3525244
Description
Mind Map by Alex apellido, updated more than 1 year ago
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Created by Alex apellido
over 9 years ago
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Operating systems
- What is an OS?
- An operating system is software that
manages computer, hardware and
software resources and provides
common services for computer programs.
- An operating system is software that
manages computer, hardware and
software resources and provides
common services for computer programs.
- How it works?
- An OS manages the hardware
and software resources of the
system. It provides a stable,
consistent way for applications to
deal with the hardware withou
having to know all the details
managing the hardware and
software resources , is very
important as various programs
and input/output methods to
work fine and get the complete
attention of the CPU.
- An OS manages the hardware
and software resources of the
system. It provides a stable,
consistent way for applications to
deal with the hardware withou
having to know all the details
managing the hardware and
software resources , is very
important as various programs
and input/output methods to
work fine and get the complete
attention of the CPU.
- Types of OS.
- ·single-tasking: only runs one program at a time.
·Multi-tasking: runs more than one program at a time.
·Single-user: have no facilities to distinguish users but
may allow multiple programs to run in tandem.
·Multi-user: extends the basic concept of multitasking
with facilities that identify processes and resources
such as disk space that allows multiple users to
interact with the system. ·Distributed: manages a
group of distinct computers and makes them appear
to be a single computer. ·Templated: refers to creating
a single virtual machine image as a guest OS.
·Embedded OS: are designed to be used in embedded
computers. They are designed to operate on small
machines like PDAs. ·Real-time: guarantees to process
events or data within a certain short amount of time.
·Library: a library OS is one ehich the services that a
typical OS provides such as networking, are provided
from the libraries.
- ·single-tasking: only runs one program at a time.
·Multi-tasking: runs more than one program at a time.
·Single-user: have no facilities to distinguish users but
may allow multiple programs to run in tandem.
·Multi-user: extends the basic concept of multitasking
with facilities that identify processes and resources
such as disk space that allows multiple users to
interact with the system. ·Distributed: manages a
group of distinct computers and makes them appear
to be a single computer. ·Templated: refers to creating
a single virtual machine image as a guest OS.
·Embedded OS: are designed to be used in embedded
computers. They are designed to operate on small
machines like PDAs. ·Real-time: guarantees to process
events or data within a certain short amount of time.
·Library: a library OS is one ehich the services that a
typical OS provides such as networking, are provided
from the libraries.
- Functions:
- -Processor management
-Memory management
-Device management
-Storage management
-Application interface
-User interface
- -Processor management
-Memory management
-Device management
-Storage management
-Application interface
-User interface
- Developements
- OS developement is one of the most complicated
activities in which a computing hobbysit may engage. In
some cases, hobby developement is in support of a
homebrew computing device, for example, a simple
single-board computer powered by a 6502
microprocessor. Or, developement may be for an
architecture already in widespread use. OS
developement may come from entirely new concepts, or
may commence by modeling an existing OS.
- OS developement is one of the most complicated
activities in which a computing hobbysit may engage. In
some cases, hobby developement is in support of a
homebrew computing device, for example, a simple
single-board computer powered by a 6502
microprocessor. Or, developement may be for an
architecture already in widespread use. OS
developement may come from entirely new concepts, or
may commence by modeling an existing OS.
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