Operating
System
Now, I’m going to explain the basics off an operating
system. This is an interface between a computer user and hardware.It is very
important as it works as a middleman making sure both hardware and software
correctly.Operating systems provide a software platform on top of which other
programs called application programs, can run. The application programs must be
written to run on top of a particular operating system. Your choice of
operating system, therefore, determines to a great extent the applications you
can run. For PCs, the most popular operating systems are DOS, OS/2 and Windows,
but others are availbale, such as Linux.
First,
The basic unit of software that the operating system
deals with in scheduling the work done by the processor is either a process or
a thread , depending on the operating system.It is processes rather than
applications, that the operating system controls and schedules for execution by
the CPU. In a single –tasking system, the schedule is straight forward.The
operating system allows the application to begin running, suspending the
execudion only long enough to deal with internepts and user input process
management is an integral part of any modern day operating system the OS must
allocate resources the processes, enable processes to share and exchange
information product the resources of each process from other processes and
enable synchronization among process. To meet these requirement is the as
must mountain a data structure for each
process, which describes the state and resource ownership of that process, and
which enables the OS to exert control
over each process.
Next, Popular operating systems
Next, Popular operating systems
The three most popular types of operating systems
for personal and businesses computing include Linux, windows and Mac
· Linux
operating systems
Linux is a freely distributed open
source operating system that runs on a number of hardware platforms. The Linux
kernel was developed mainly by Linus Torvalds and it is based on Unix.
· Mac
Operating Systems
Mac OS is official name of the Apple Macintosh operating system. Mac OS
features a graphical user interface (GUI) that utilizies windows, icons and all
applications that run on a Macintosh computer have a similar user interface.
·
Windows
operating system
Microsoft Windows is a family of operating systems for personal and
business computers. Windows dominates the personal computer world, offering a graphical
user interface (GUI), virtual memory management, multitasking and support many
peripheral devices
Then,
There are four essential managers of
every OS and they all work together like team to get jobs completed. An
operating system is simple term it’s chief program that manages all of the
hardware and software . It is works as their bass and makes sure they are all
working in harmony.
- Memory management is the function that controlling and coordinating memory location and either allocated or free blocks to various programms to optimize overall system performance. There are 4 types of technique ways to manage memory.
1. Single
contiguous allocation
2. Partitioned
allocation
3. Paged
memory management
4. Segmented
memory management
All this techniques has
their own advantages on their own. In hardware memory management involves
components that physically store data, such as RAM (Random Access Memory ),
VRAM (Virtual RAM), GRAM (Graphical RAM), chips, memory caches and flash based
SSDs (Solid Star Drives)
2. Device manager
is control panel applet in Microsoft Windows operating systems it allows users
to view and control the hardware attached to the computer. Hardware devices
typically provide the ability to input data into the computer output data from
the computer. Device manager is
a feature of Microsoft Windows that detects and lists hardware devices and their status
information. Device Manager is available in Microsoft Windows 95, 98, ME, 2000,
2003, XP, Vista, 7, 8, and 10.Device management
does the following activities for device manager.Keeps track of all devices,
decides which process gets the device allocates way, de-allocated device.
Device manager important to make sure it’s well designed.
3. A file manager or file browser
is a computer program that providers a user interface to and folders.It has limited capalities and is
designed to manage individual or group files, such as special office documents
and records. A file management sustems is also known as a file manager.File
manager is a software program that helps a user manage all the files on their
computer.For example, all the managers allow the user to view, edit, copy and
delete the files on their computer.
4. Network management is
the process of administering and managing the computer networks of one or many organisations. Various services
provided by network managers include fault analysis, performance management,
provisioning of network and network devices.
5. The Process manager is an integral part of any modern-day operating
system (OS). The OS must allocate resources to processes, enable processes to share and exchange information,
protect the resources of each process from other processes and enable synchronization
among processes.
Ø
Finally,
Operating
systems provide a software platform on top of which other programs called
application programs, can run. It is very important as it works as a middleman
making sure both hardware and software correctly. Without an operating system,
a computer useless.
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