There are three types of scheduler in Operating system.

1) Long term scheduler (LTS)- LTS or Job scheduler, LTS is responsible for creating new processes and bringing them into the system.

LTS is responsible to switch the processes to the ready state from new state, that is the reason LTS also known as job scheduler.

2) Short term scheduler- Short term scheduler or CPU scheduler is responsible for scheduling one of the process from ready state to the running state.
Short term scheduler responsible to allocated the CPU to the process , than switches  that process from ready state to the running state.

Short term scheduler allocated the CPU so it's also known as CPU scheduler.

3) Medium term scheduler- Is responsible of suspending and resuming the processes.
The medium term scheduler is also known as swapper.

Medium term scheduler is responsible for switching  the process from ready state and wait state to the suspended ready state and suspended wait state.

To know about suspend ready and suspend wait state click here.

Operating Systems: covered following topics in Operating Systems.
    A list of Video lectures

    Python Programming ↓ 👆
    Java Programming ↓ 👆
    JAVA covered following topics in these notes.
    JAVA Programs
    Principles of Programming Languages ↓ 👆
    Principles of Programming Languages covered following topics in these notes.

    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 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


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

      Computer Network ↓ 👆
      Computer Network 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
      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.