operating systems

operating systems

1. Definition : operating system is the essential part that allows other system software and application software to communicate with hardware.

2. EXAMPLES

   • version of Microsoft windows (windows 10 , windows 8 , windows 7 , windows vista and windows XP)
     • LINUX
     • APPLE'S MACOS
     • CHROME OS
     • GOOGLE ANDROID

3. FUNCTIONS

   • CONTROL THE HARD DISK
   • CONTROL PERIPHERALS SUCH AS THE KEYBOARD OR PRINTER
   • CONTROL FILE OPERATIONS
   • ORGANIZES THE USE OF MEMORY BETWEEN PROGRAMS
   • ORGANIZES PROCESSING TIME TIME BETWEEN USERS AND PROGRAMS
   • DEAL WITH ERRORS AND ISSUES ERRORS MESSAGES
   • MAINTAINS SECURITY

4. OPERATING SYSTEMS ARE RESPONSIBLE FOR MAIN 5 TASKS

   • MEMORY MANAGEMENT
     • THE OS WILL BE RESPONSIBLE FOR ENSURING THAT PROGRAMS RUNNING HAVE SPACE IN RAM.
   • STORAGE MANAGEMENT
     • THE OS WILL RESPONSIBLE FOR OVERSEEING ALL SAVED DATA TO AND FROM SECONDARY STORAGE.
   • DEVICE MANAGEMENT
     • THE OS KEEP TRACK OF ALL EXTERNAL DEVICES PLUGGED INTO THE COMPUTER
   • MANAGES SECURITY
     • THE OS PROVIDES SOME BASIC FORMS OF SECURITY , NORMALLY IN RELATION TO DIRECT ACCESS TO THE MACHINE
   • PROVIDES INTERFACE
     • THE OS PROVIDES AN INTERFACE FOR THE USER TO USE ON THE COMPUTER .