Introduction to Operating Systems

Introduction to Operating Systems:

An operating system is a software which acts as an interface between computer user and the computer hardware. 

It gives a person-pleasant surroundings in which a usermay also moreover results easily increase and execute programs. otherwise, hardware knowledge might be elssetial for pc programming. So, it is able to be said that an OS hides the complexity of hardware from non-technical users.

Gary Kildall, father of the PC operating system.

Some examples of PC OS:
  1. Windows 10
  2. Ubuntu 
  3. MAC
  4. Chrome OS 
  5. Windows 7
Some examples of mobile OS:
  1. Android
  2. I-Phone OS
  3. Blackberry
  4. Windows Mobile
  5. Symbian
Some of the important functions of an OS:
  1. Memory Management
  2. Processor Management
  3. Device Management
  4. File Management
  5. Security
Types of OS: (Read more)
  1. Batch OS
  2. Time sharing OS
  3. Distributed OS
  4. Network OS
  5. Real Time OS
    1. Soft Real Time Os
    2. Hard Real Time OS
  6. Multiprocessing OS
Operating Systems:

EasyExamNotes.com covered following topics in Operating Systems.
    A list of Video lectures
    Python Programming ↓ 👆
    Java Programming ↓ 👆
    JAVA EasyExamNotes.com covered following topics in these notes.
    JAVA Programs
    Principles of Programming Languages ↓ 👆
    Principles of Programming Languages
    EasyExamNotes.com covered following topics in these notes.

    Practicals:
    Previous years solved papers:
    A list of Video lectures References:
    1. Sebesta,”Concept of programming Language”, Pearson Edu 
    2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
    3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
    4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

      Computer Organization and Architecture ↓ 👆

      Computer Organization and Architecture 

      EasyExamNotes.com covered following topics in these notes.

      1. Structure of desktop computers
      2. Logic gates
      3. Register organization
      4. Bus structure
      5. Addressing modes
      6. Register transfer language
      7. Direct mapping numericals
      8. Register in Assembly Language Programming
      9. Arrays in Assembly Language Programming

      References:

      1. William stalling ,“Computer Architecture and Organization” PHI
      2. Morris Mano , “Computer System Organization ”PHI

      Computer Network ↓ 👆
      Computer Network

      EasyExamNotes.com covered following topics in these notes.
      1. Data Link Layer
      2. Framing
      3. Byte count framing method
      4. Flag bytes with byte stuffing framing method
      5. Flag bits with bit stuffing framing method
      6. Physical layer coding violations framing method
      7. Error control in data link layer
      8. Stop and Wait scheme
      9. Sliding Window Protocol
      10. One bit sliding window protocol
      11. A protocol Using Go-Back-N
      12. Selective repeat protocol
      13. Application layer
      References:
      1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
      2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
      3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
      4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.