smad/org-roam
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

brain initiation

Browse Source
This commit is contained in:
smad
2025-11-05 09:18:11 +01:00
commit 933aa8a985
191 changed files with 6203 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
20240130101659-operating_system.org Normal file
View File

@@ -0,0 +1,12 @@
:PROPERTIES:
:ID: 3cc7bb7e-9fa2-4f29-89fe-f3aa92241dc5
:END:
#+title: operating_system
An operating system (OS) is system software that manages computer [[id:01ec5ed6-a234-4063-994b-174f704bb28a][hardware]] and 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, peripherals, 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 [[id:f2b1d5af-1a7d-47a5-95c8-4a85d558419e][server]] and supercomputers.
In the personal computer market, as of September 2023, Microsoft Windows holds a dominant market share of around 68%. macOS by Apple Inc. is in second place (20%), and the varieties of [[id:5fada795-19a3-4ba6-97c0-0b70bd728a2f][Linux]] , including ChromeOS, are collectively in third place (7%). In the mobile sector (including smartphones and tablets), as of September 2023, Android's share is 68.92%, followed by Apple's iOS and iPadOS with 30.42%, and other operating systems with .66%. 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.