Computer Software

D322

System Software

general purpose software that is used to operate the computers hardware

provides a platform to run app software

application software

specific-purpose software used to perform a specific task

Operating System

network , server, mobile, personal computer

Windows and MacOS

closed-source

Linux

Open-sourced

Google Android

open-sourced

Apple IOS

Closed sourced

Utility Software

extends the capabilities of an operating system

Kernel

internal part of the operating system, file manager

User Interface

allows end users to communicate with the operating system

Graphical User Interface

allow end users to issue commands through input devices

Operating System Users

an operating system is tasked with protecting the computer’s resources from unauthorized users

Memory Manager

another component of an operating systems kernel

manages the systems primary main memory

Paging

creates an illusion of additional space by rotating programs and data between the primary and secondary memory

virtual memory

the space created by paging

Device Driver

the kernel of the operating system stores a collection of these

• translates generic requests into technical steps required to complete the task

• middle-ware

  • facilitates the communication between hardware and software

productivity software

word, powerpoint, excel

collaboration software

online workspaces, document storage, usually through a cloud

specialized software

graphic design, blender, etc

local applications

application software on individual computers, found on personal machines

software licensing

you gotta buy it to use it

software packing

freeware, shareware, public domain

shareware

can be installed as a trial limited by time and/or functionality and upgraded for a fee

freeware

protected by end-user license agreements

public domain

no eula / available for anyone to download

compiler

translates source code into machine language all at once

c, c++, c#, java

interpreter

translates code one line at a time

perl, python, javascript

algorithm

is a mathematical method of solving problems both big and small