OPERATING SYSTEMS DIVISIONAL FACTS
AN OPERATING SYSTEM IS A SOFTWARE PROGRAM THAT ACTS
AS AN INTERFACE BETWEEN THE USER AND THE HARDWARE OF THE COMPUTER. IT ALSO MANAGES THE COMPONENTS OF THE MACHINE
SUCH AS PROCESSOR MANAGEMENT, DISK RESOURCE MANAGEMENT, INPUT OUTPUT FILES,
DEVICES ETC.
SOME OF THE OPERATING SYSTEM I AM GOING TO SHOW
YOU. SO LETS GET STARTED
USER
INTERFACE : THE USER INTERFACE ALLOW THE
USER TO INTERACT WITH THE MACHINE. THERE
ARE TWO TYPES OF USER INTERFACE GIVEN BY THE USER INTERFACE DEVELOPERS. THEY ARE AS FOLLOWS
1. CHARACTER LINE USER
INTERFACE SUCH AS LINUX REDHAT
2. GRAPHICAL LINE USER
INTERFACE SUCH AS WINDOWS OPERATING SYSTEM
IN CHARACTER LINE USER INTERFACE THE USER HAVE TO
INTERACT WITH THE COMPUTER BY GIVING COMMANDS THAT’S WHY IT IS ALSO CALLED AS
COMMAND LINE INTERFACE.
IN GRAPHICAL USER INTERFACE THIS CONTROL IS GIVEN TO
THE USER WHERE THE USER WITH MOUSE OR KEYBOARD WILL CONTROL THE COMMAND OR AN
OBJECT KEPT ON THE DESKTOP OF THE COMPUTER.
FOR EXAMPLE USING A MOUSE, KEYBOARD, DROP DOWN MENU, SCROLLING CONTENT
AREAS ETC.
MEMORY
MANAGEMENT : THE OPERATING SYSTEM DOES MEMORY MANAGEMENT BY
ALLOCATING AND DEALLOCATING MEMORIES FOR PARTICULAR JOB OR PROGRAM. HERE ALLOCATION STARTS AT THE BEGINNING OF
THE PROGRAM AND DEALLOCATION START AT THE TERMINATION OF THE PROGRAM.
PROCESS
MANAGEMENT : THE PROCESS MANAGEMENT FUNCTION OF THE OPERATING SYSTEM DOES
ALLOCATE AND DEALLOCATE THE MEMORY, PROCESSOR, SYSTEM RESOURCES SUCH AS DISC
RESOURCES, SYSTEM CLOCKS ETC. WHEN THE
JOB IS TERMINATED THE OPERATING SYSTEM RELEASES THE CONTROL OF SYSTEM
RESOURCES.
DEVICE
MANAGEMENT : OPERATING SYSTEM INTITIATES THE DEVICES SENDS OR RECIEVES THE DATA
FROM THE DEVICES AND CONTROLS THE OPERATION OF THE DEVICES SUCH PRINTING,
SCANNING ETC.
FILE
MANAGEMENT
: THE FILE MANAGEMENT SYSTEM OF THE
OPERATING SYSTEM REFERS TO MANAGING THE FILE SYSTEM MEANS WHERE IT WILL BE
STORED, THEIR STATUS AND MEMORY LOCATION. IT ALSO DEALS WITH OPENING AND
CLOSING OF THE FILES AND PROVIDING ACCESS PERMISSION TO THE FILE SYSTEM. FURTHER , THE OPERATING SYSTEM DETERMINES
HOWTO NAME THE FILES.
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