OS meaning in Information Technology ?

Answer: What is Operating System mean?

An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.

Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.

The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of around 76.45%. macOS by Apple Inc. is in second place (17.72%), and the varieties of Linux are collectively in third place (1.73%). In the mobile sector (including smartphones and tablets), Android's share is up to 72% in the year 2020. According to third quarter 2016 data, Android's share on smartphones is dominant with 87.5 percent with also a growth rate of 10.3 percent per year, followed by Apple's iOS with 12.1 percent with per year decrease in market share of 5.2 percent, while other operating systems amount to just 0.3 percent. Linux distributions are dominant in the server and supercomputing sectors. Other specialized classes of operating systems (special-purpose operating systems), such as embedded and real-time systems, exist for many applications. Security-focused operating systems also exist. Some operating systems have low system requirements (e.g. light-weight Linux distribution). Others may have higher system requirements.

Some operating systems require installation or may come pre-installed with purchased computers (OEM-installation), whereas others may run directly from media (i.e. live CD) or flash memory (i.e. USB stick).

reference

Full Form	Category
Oceanography Society	Academic & Science
Original Solution	Academic & Science
Overseas Studies	Academic & Science
Outstanding Student	Academic & Science
Open Space	Academic & Science
Orzya Sativa	Academic & Science
On Sheet	Accounts and Finance
Ordinary Shares	Business
Off Site	Business
overstock(ed)	Business
Oregon Steel Mills, Incorporated (de-listed)	Business
OmniSky	Business
Overhead Spending	Business
Original Special	Business
Operating Standards	Business
Organizational Software	Business
Osmium	Chemistry
Orientation Sessions	Community
Outside Source	Community
Off Screen	Community
Organ Series	Community
Old Style	Community
Old School	Community
O Sullivan	Community
Optical fiber Singlemode category	Computer and Networking
Open System	Computing
Oracle Support	Computing
Operational Software	Computing
Odd Squad	Computing
Open Software	Computing
OS	Cryptocurrency
Ethereans	Cryptocurrency
Old Suisun	General
Omnipotent Spirituality	General
Operating Style	General
Object Summary	General
Outer Sen	General
Operational Sponge	General
Ole Syversen	General
A Outside System	General
Oculus Sinister	General
Ownage Squad	General
Oh Starcraft	General
On Serotta	General
A On Surveillance	General
Orchard Street	General
Open Socket	General
Officer Standpoint	General
Optical Stabilizer	General
Open Systems	General
Oh Shoot	General
One shot	General
Oculum Sinister	General
Oft S	General
Oleum Sanctum	General
Output Swing	General
Only So	General
Opposite Sign	General
Osteogenic Sarcoma	General
One Size	General
Offentlig Sak	General
Occulus Sinister	General
Old Shinola	General
Ophiological Services	General
Over Sized	General
Oooh Shizzit	General
Old Sebilis	General
Overly Short	General
Online Service	General
Omega Strain	General
On Steroids	General
Ostrich Source	General
Other Source	Governmental
Out of Scope	Governmental
Oil Spill	Governmental
Optional Stopping	Governmental
Other Supplementary	Governmental
Outside Scope	Governmental
Out Station	Indian Railways
Open Source	Information Technology
Operating System	Information Technology
Ouvrier spécialisé	International
Organizzazioni Sindacali	International
Oneself	Internet
OfficerScout	Internet
Out Sized	Jobs
Other Singer	Jobs
Ordinary Seaman	Jobs
mouth (os)	Medical
Obese Strain	Medical
Observational Study	Medical
Occupational Safety	Medical
Office Surgery	Medical
oligosaccharide	Medical
Omenn syndrome	Medical
Opening Snap	Medical
Opitz syndrome	Medical
Oral Solution	Medical
Organ-Specific	Medical
Osgood-Schlatter	Medical
osteosarcoma	Medical
Osteosclerosis	Medical
Outer Segment	Medical
Overlap Syndrome	Medical
Oxidative Stress	Medical
Ocular Sinister	Medical
Orthopterists' Society	Medical
Overall Survival	Medical
Osteogenic Sarcoma (bone tumors)	Medical
Left eye (oculus sinister)	Medical
OStium (mouth)	Medical
Oral Surgery	Medical
Oxygen Saturation	Medical
Orthopaedic Surgeon	Medical
Opposite Strand	Medical
left eye?culus sinister	Medical
On Service	Military and Defence
Operations Specialist	Military and Defence
Opportunity To Serve	Military and Defence
Old Skool	Military and Defence
On Station	Military and Defence
Ordnance Survey	Military and Defence
Overtly Similar	Military and Defence
Other Specifications	Military and Defence
Outer Sensor	Military and Defence
Operating Strength	Military and Defence
On Sea	Military and Defence
Online Services	Networking
Overhead Sending	Networking
Open Server	Networking
Off-street Parking	Real Estate
Optimize for Size	Softwares
Open Sockets	Softwares
Outer Space	Space Science
On-orbit Station	Space Science
Operating Software	Space Science
Optics Subsystem	Space Science
Orbital Servicing	Space Science
Orbiter Specification	Space Science
Outside Shot	Sports
Optimal Strategy	Sports
Open Street	Stock Exchange
Operations System	Telecommunication