The Operating System _ What is It?

OPERATING SYSTEM 

THE TERM OPERATING  SYSTEM, OR OS FOR SHORT IS A TERM THAT IS USED TO REFER TO A SYSTEM SOFTWARE THAT OVERSEES THE ACTIVITIES AND OR OPERATIONS OF THE COMPUTER SYSTEM. WITHOUT THIS SYSTEM SOFTWARE, THE COMPUTER WOULD MERELY JUST BE A AN ELECTRONIC DEVICE, WITH NO INSTRUCTIONS ON HOW IT SHOULD WORK😕.

THE OPERATING SYSTEM IS ACTUALLY THE MAJOR PART OF THE SYSTEM SOFTWARE, AS ALL OTHER PROGRAMS AND APPS DEPEND ON IT TO WORK. IN OTHER WORDS, THE OPERATING SYSTEM SERVES AS A FOUNDATION ON WHICH ALL OTHER SOFTWARE PROGRAMS ARE BASED. 
   IMPORTANT OPERATIONS SUCH AS BOOTING REQUIRES THE OPERATING SYSTEM TO TAKE PLACE PROPERLY.

OPERATING SYSTEM VARIES FROM SYSTEM TO SYSTEMS , BASED ON HOW THEY WORK:

1) SINGLE USER SINGLE TASK OS

2) SINGLE USER MULTI TASK OS

3) MULTI USER MULTI TASK OS

4) REAL TIME OS


SINGLE USER SINGLE TASK 🙎‍♂

THIS KIND OF OS , AS THE TITLE GOES: ALLOWS ONLY ONE USER ON THE COMPUTER SYSTEM AND CAN PERFORM ONLY ONE TASK OR FUNCTION AT A TIME😁 THE CONCEPT OF MINIMIZING DOESN'T APPLY HERE 😈.... A TYPICAL EXAMPLE WOULD BE JAVA PHONES 📞. WHICH DOESNT ALLOW MORE THAN ONE ACTIVITY AT A TIME ONCE YOU PRESS THE EXIT BUTTON , YOU FORFEIT THE ACTION YOU WERE PERFORMING.


 SINGLE USER MULTI TASK OS

IN THIS CASE THIS OPERATING SYSTEM ALLOWS ONLY ONE USER TO ACCESS ITS RESOURCES, BUT CAN PERFORM MORE THAN ONE FUNCTION AT A TIME.😎 A TYPICAL EXAMPLE IS THE ANDROID OS , NOWADAYS SMARTPHONE USERS CAN MINIMIZE WITH THE BUTTONS PROVIDED TO JUMP FROM ONE ACTIVITY TO ANOTHER. GREAT UHN?...............................WELL IT EVEN GETS BETTER!

MULTI USER MULTI TASK OS

THIS OPERATING SYSTEM ALLOWS MORE THAN ONE USER TO OWN AND MANAGE THE COMPUTER WITH SEPARATE ACCOUNTS , ALLOWING EACH ONE TO HAVE ACCESS KEYS (PASSWORD) TO LOGIN INTO THE SYSTEM AND WORK ON IT. THIS KIND OF OS IS NOW VERY COMMON  NOWADAYS YOU MIGHT HAVE SEEN ONE. NOT JUST THAT IT ALSO ALLOWS USERS TO WORK INDEPENDENTLY  AND IN A MULTIFUNCTIONAL WAY ...MEANING THEY CAN PERFORM VARIOUS TASK AT THE SAME TIME😁.

MOST PCS AND LAPTOPS🖥⌨💻 HAVE THIS KIND OF OPERATING SYSTEM INSTALLED ON THEM .




REAL TIME OS

THIS KIND OF OS IS A WORTH MENTIONED OS BECAUSE IT IS ACTUALLY A MULTIFUNCTIONAL OS THAT IS MOSTLY USED BY COMPLEX SYSTEMS AND MACHINES TO WORK IN COMPANIES THAT MAKE USE OF THESE MACHINES TO CONSTRUCT OR MEASURE OUT VALUES OF SOME CERTAIN PARAMETERS 😎...THIS OS ALSO COMES IN TWO TYPES 

1) HARD REAL TIME OS

2) SOFT REAL TIME OS...

OPERATING SYSTEMS AS WE HAVE SEEN ARE A MAJOR WHEN IT COMES TO THE COMPUTER SYSTEM . ANYTHING WORTH CALLING A COMPUTER MOST DEFINITELY HAS AN OPERATING SYSTEM INSTALLED ON IT...