Skip to main content
Super TutorResources
Chapter 1 of 11
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Computer System

CBSE · Class 11 · Computer Science

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

43 questions80 flashcards5 concepts

Interactive on Super Tutor

Studying Computer System? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 11 students started this chapter today

Key Topics to Revise

1

1. Computer System and CPU

  • A computer system primarily comprises CPU, memory, input/output devices, and storage devices.
  • CPU is the electronic circuitry that carries out the actual processing and is called the brain of the computer.
  • CPU is also popularly known as processor or microprocessor.
2

2. Evolution of Computer and Architecture

  • Von Neumann architecture consists of CPU, memory, input/output devices, and communication channels.
  • ENIAC is the first binary programmable computer based on Von Neumann architecture.
  • In 1965, Gordon Moore introduced Moore's Law.
3

3. Computer Memory and Units

  • Computer memory stores data and instructions for processing.
  • Primary memory is the main memory used during processing.
  • Secondary memory stores data, instructions, and results permanently for future use.
4

4. Data Transfer and Bus System

  • Data are transferred between components of a computer system using physical wires called bus.
  • Three types of bus are data bus, address bus, and control bus.
  • Data bus transfers data between different components.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

A computer system includes the computerThe CPU is the electronic circuitryThe ALU performs arithmetic and logicRegisters are small local memory unitsPrimary memory is directly accessed by

Frequently Asked Questions

What are the important topics in Computer System for CBSE Class 11 Computer Science?
Computer System covers several key topics that are frequently asked in CBSE 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 — CBSE Class 11 Computer Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

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

More resources for Computer System

All 11 chapters — CBSE Class 11 Computer Science Revision Notes

For serious students

Get the full Computer System chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 11 Computer Science.

Try Super Tutor Free
Try the full chapter — Free