Operating systems

Operating systems

1. BIOS

   • Basic input output system
     • This software is on every pc before you load the os onto it.
       • You set the clock on the bios before the os is loaded on because the os gets the time from the bios
     • From the bios you can allocate the amount of ram the graphics card has.
       • You can also allocate what hardware is accessed first.

2. Linux

   • Linux is open souce software menaing the code of the os is open to everyone
     • However, this also means that there are many different versions making it had to choose.
       • One of the main versions of linux is Ubuntu.
     • Open source also means it has to all be shared so if you make a new verison, even if the change is tiny, you have to make it aviable for free.
       • You load the os from a disk or usb stick which is why you have to set what is loaded first from the bios

3. Keywords/componenets.

   • Cmos battery.
     • The cmos battery is important because it keeps the settings such as allocated ram and the clock saved so you dont have to set them all the time.
   • OS
     • Operating system
   • UI
     • User interface.

4. Purpose of a os.

   • The OS prevides a UI so the user can access apps
     • From the ui the user can also access files and the internet.
   • Organises memory between programs.