Operating Systems by Lucía Ceballos https://padlet.com/ceballosperezlucia/pnv6a6lnnsim Definition, parts, components, functions and examples. en-us 2019-11-21 07:34:39 UTC 2024-07-15 14:05:56 UTC hello@padlet.com DEFINITION ceballosperezlucia https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/414494071 An operating system (OS), in its most general sense, is software that allows a user to run other applications on a computing device. While it is possible for a software application to interface directly with hardware, the vast majority of applications are written for an OS, which allows them to take advantage of common libraries and not worry about specific hardware details.

The operating system manages a computer's hardware resources including:
  • Input devices such as keyboard and mouse.
  • Output devices such as display monitors, printers and scanners.
  • Network devices such as modems, routers and network connections.
  • Storage devices such as internal and external drives.

The OS also provides services to facilitate the efficient execution and management of, and memory allocations for, any additional installed software application programs.
]]> 2019-11-21 07:41:26 UTC https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/414494071 PARTS AND COMPONENTS ceballosperezlucia https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/416047368 Parts of an Operating System
  1. Shell: It is the outer part of an operating system and it is responsible of interacting with the operating system.
  2. Kernel: Responsible for managing and controlling computer resources such as the processor, main memory, storage devices, input devices, output devices and communication devices.

Resource uner the Operating System control
  • The processor
  • Main memory
  • Input/Output Device
  • Secondary storage devices
  • Communication devices and ports
]]> 2019-11-25 09:16:49 UTC https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/416047368 FUNCTIONS ceballosperezlucia https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/417379863
  • Job scheduling: It is the process of the operating system to keep list of jobs currently being run by the computer and clocking them in and out of the processor.
  • Interrumpt handling: It is a break from the normal sequential processing of instructions in a program.
  • Resource control and allocation: It is a situation where the processor gives a computer resources a unique number called interrupt number so that it can be able to recognize and prioritize it.
  • Memory Management: It is where the operating system constantly assigns main memory storage partitions to data and instructions.
  • Error handling: It is a situation whereby an operating system alerts the user of errors that arises in ease of illegal operations. hardware or software failure.
  • Input/Output handling
    • ]]>     2019-11-28 07:39:04 UTC https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/417379863     EXAMPLES ceballosperezlucia https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/417380127
  • DOS (Disk Operating System): One of the first operating systems for the personal computer. When you turned the computer on all you saw was the command prompt which looked like c:\ >. You had to type all the command prompt which might look like c:\>wp\wp.exe. This is called a command-line interface. It was not very "user-friendly".
  • Windows: The Windows operating system, a product of Microsoft, is a GUI (Graphical User Interface) operating system. This type of "user-friendly" operating system is sais to have WIMP (Windows, Icons, Menus, Pointing device) features.
  • MacOS: Macintosh, a product of Apple, has its own operating system with a GUI and WIMP features.
  • Unix - Linux (The PC version of Unix): Unix and Linux were originally created with a command-line interface, but recently have added GUI enhancements.
    • "User-friendly" is a relative term. The current GUI interfaces provided by Windows and Mac operating system are more friendly than the previous DOS systems, but still require us to conform to their specifications (use of a keyboard or mouse instead of voice and/or hand-writing recognition).
    ]]>     2019-11-28 07:40:03 UTC https://padlet.com/ceballosperezlucia/pnv6a6lnnsim/wish/417380127