1.7 System software

1.7 System software

1. what operating systems have you used?

   • windows (7, 8 and 10) IOS Mac android linux/unix raspbian

2. why are there so many different operating systems?

3. there are so many underlying information systems/processor architectures and that each works best with operating software optimized for it.

4. keywords: system software, operating system (OS), virtual memory, utility programs, device drivers, multitasking, time slice, processor management, user interface, graphic user interface, command line interface, peripheral management, file management.

5. what is system software?

   • system software is a type of software that controls the computers hardware
   • it provides an interface between the user of the computer and the hardware
   • an operating system is a type of system software
     • operating systems provide an interface between the user and the hardware
     • they are said to provide a virtual machine
       • virtual machines hides the complexities of the software from the user

6. device drivers

   • graphics card driver
   • network interface card driver

7. utility programs

   • data compresson
   • disk copier/formatter
   • disk defragmentation tool
   • anti-virus software