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Computer System

Karnataka Board · Class 11 · Computer Science

Quick revision notes for Computer System — Karnataka Board Class 11 Computer Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions22 flashcards5 concepts

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Key Topics to Revise

1

Introduction to Computer System

  • A computer is an electronic device that accepts input, processes data, and generates output
  • Computer system = Computer + Additional hardware + Software
  • Main components: CPU, Memory, Input/Output devices, Storage devices
2

Evolution of Computer

  • Computing evolution: Abacus (500 BC) → Modern computers (present)
  • Key milestones: Pascaline (1642), Analytical Engine (1834), Tabulating Machine (1890)
  • Turing Machine (1937) - concept of programmable machine
3

Computer Memory

  • Memory units: Bit → Nibble (4 bits) → Byte (8 bits)
  • Memory hierarchy: KB → MB → GB → TB → PB → EB → ZB → YB
  • Each unit is 1024 times the previous unit (not 1000)
4

Data Transfer and System Bus

  • Data transfer uses physical wires called 'bus'
  • Three types of buses: Data bus, Address bus, Control bus
  • System bus = Data bus + Address bus + Control bus

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Full Notes

Key Concepts

A computer system has four mainComputers evolved from simple calculating devicesMemory is measured in bitsData is rawA microprocessor is a CPU on

Frequently Asked Questions

What are the important topics in Computer System for Karnataka Board Class 11 Computer Science?
Computer System covers several key topics that are frequently asked in Karnataka Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Computer System — Karnataka Board Class 11 Computer Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 11 chapters — Karnataka Board Class 11 Computer Science Revision Notes

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