Summary of L-1.2: Batch Operating System | Types of Operating System

Summary of the Video: "L-1.2: Batch Operating System | Types of Operating System"

In this video, the speaker from Gate Smashers discusses various types of operating systems, focusing primarily on batch operating systems. The content is aimed at students preparing for university, college exams, or competitive exams, ensuring they understand all relevant points about operating systems.

Main Ideas and Concepts:

• Types of Operating Systems:
  • Batch Operating System
  • Multi-programmed Operating System
  • Multi-tasking Operating System
  • Real-time Operating System
  • Distributed Operating System
  • Clustered Operating System
  • Embedded System
• Batch Operating System:
  • Definition: A Batch Operating System processes jobs in batches, where similar types of jobs are grouped together and executed sequentially.
  • Historical Context:
    • Used primarily in the 1960s by major companies (e.g., NASA, ISRO) for heavy computations.
    • Jobs were submitted using punch cards or magnetic tapes.
  • Job Submission Process:
    • Users would submit their jobs offline to an operator, who would manage job execution.
    • The operator would create batches of jobs and provide them to the CPU for processing.
  • Execution Process:
    • The CPU executes the first job in the batch but may remain idle if the job requires input/output operations until the job is completed.
    • This leads to significant idle time for the CPU, which was a major disadvantage of batch processing.
  • Improvements:
    • The introduction of monitors allowed users to input jobs directly into the system, reducing reliance on operators.
    • IBM developed systems like FORTRAN and IBSYS 709X to facilitate batch processing.

Methodology/Instructions:

• Job Submission:
  • Users prepare jobs on punch cards or tapes.
  • Submit jobs to an operator who batches similar jobs together.
• Execution:
  • The operator provides the first job in the batch to the CPU.
  • If the job requires input/output, the CPU remains idle until the job is completed.
• Result Collection:
  • Users must return to the operator to collect the results of their jobs, which may take a significant amount of time (days, weeks, etc.).

Speakers/Sources Featured:

The speaker is affiliated with Gate Smashers. Specific names are not mentioned in the subtitles.

Notable Quotes

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Category

Educational

Video