Abstract View of a System

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/UP-POLICE-COMPUTER-OPERATOR/emerging-technologies/introduction-to-os/os-basics-goals/asset-abstract-view-of-a-system after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About the course: About the Course
  2. General Knowledge: Polity, Physics, Biology, State Wise GK, Chemistry, History, Geography, GK- Current Affairs, Indian Economy, Static General Knowledge, Environment, Evolution of Indian Banking (Banking & Financial Awareness)
  3. Mental Aptitude and Reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Vocabulary, Profit and Loss, Arithmetic, Mental Ability, Percentage, Algebra, Mensuration and Geometry, Age Problems, Clock, Calendar, Verbal Analogy (Word Based Analogy), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Analogy, Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Selection Decision Table (Decision Making), Cubes & Dices, Blood Relations, Venn Diagram, Logical Sequence Of Words, Inequality, Directions (Direction Test), Data Arrangement, Facts, Inference and Judgements, Syllogisms, Seating Arrangements, Ranking, Order and Sequence
  4. CS | Computer Fundamentals: Basics of COA, Number System, Number Representation, C Fundamentals, Algorithm Analysis, Input Output Organisation
  5. CS | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, SQL
  6. CS | Workplace productivity Tools: MS Office Applications, Keyboard Shortcuts
  7. CS | Computer Networks: Introduction to CN, Data Communication, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, Application Layer, Hardware Basics, Network Security
  8. CS | The Internet: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Web Publishing & Hosting, Server Side & Security, Emerging Technologies
  9. CS | Emerging Technologies: Artificial Intelligence, Emerging Tech Trends, Introduction to OS, Windows OS, Linux OS, Unix OS, JavaScript-Basics
  10. CS | Boolean algebra: Digital Systems & Boolean Basics, Boolean Expression, Boolean Minimization, Logic Gates & Hardware
  11. CS | Data Structures: Introduction to DS, Array, Stack, Queue
  12. CS | Cryptography: Society, Law & Ethics, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Security in Mobile and Wireless Computing, Electronic Data Interchange and E-Commerce, Physical Security and Cryptography Basics, Intrusion Detection Systems (IDS), Cyber Safety and Security
  13. UP Police Previous Year Papers:
  14. UP Police Full Mock Tests:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This short lecture segment introduces the abstract layered view of a computer system. The slide titled “Abstract View of a Computer System” shows four stacked layers: users at the top (User 1, User 2, User 3 … User n), a green band of system and application programs (Compiler, Assembler, Text Editor, Database System) over the label “System and Application Programs”, a purple Operating System band, and a blue Computer Hardware box at the base. The left-side bullets define each layer: computer hardware (CPU, memory units, I/O devices, system bus, registers) provides basic computing resources; the OS controls and coordinates hardware use among application programs; system and application programs define how these resources are used to solve users’ computing problems; and the user sits at the top. The instructor gestures toward the diagram, points to specific layers, and later adds red hand-drawn circles around Compiler, Operating System, and Computer Hardware with connecting lines to emphasize the OS as an intermediary. No worked examples or formulas appear; the content is conceptual architecture.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The slide “Abstract View of a Computer System” displays stacked layers: magenta User boxes (User 1, User 2, User 3 … User n), a green band listing Compiler, Assembler, Text Editor, Database System over “System and Application Programs”, a purple Operating System band, and a blue Computer Hardware box. Left bullets state: “Computer hardware – CPU, memory units, i/o devices, system bus, registers etc. provide basic computing resources.”; “OS – Control and coordinates the use of the hardware among the various applications programs.”; “System and Applications programs – Defines the way in which these resources are used to solve the computing problems of the user.”; and “User”. The instructor gestures toward the diagram, explaining that users interact through programs while the OS coordinates hardware.

  2. 2:00 – 2:56 02:00-02:56

    The same layered slide remains visible as the instructor, a male educator in a white shirt and glasses, stands beside it pointing at specific parts. Red hand-drawn circles highlight the Compiler, Operating System, and Computer Hardware elements with connecting lines, emphasizing the OS’s intermediary role between application programs and hardware. The bullets for “Computer hardware”, “OS”, and “System and Applications programs” remain on screen, reinforcing that the OS controls and coordinates hardware usage among various application programs while users sit at the top of the hierarchy.

The central idea is a four-layer abstraction: hardware at the base provides raw computing resources; the operating system sits above it to control and coordinate those resources among competing applications; system and application programs (compiler, assembler, text editor, database system) define how resources are used to solve user problems; and users occupy the top layer. The instructor’s pointing and red circles on Compiler, OS, and Hardware visually reinforce that the OS is the intermediary layer. No equations or worked examples are present; this is a conceptual architecture slide suitable for revision as the foundational OS layering model.

Loading lesson…