CBSE Class 11 Computer Science – Computer System Overview

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Study Materials

11th

11th - Computer Science

Computer System Overview

Chapter Overview

This chapter introduces the components of a computer system, including hardware, software, and users. It explains the functions of the Central Processing Unit (CPU), memory, input/output devices, and operating systems. The chapter lays the groundwork for understanding how computers execute tasks and interact with users and applications.

Important Keywords

  • Hardware: The physical components of a computer such as CPU, RAM, hard drive, keyboard, etc.
  • Software: A set of instructions that tells the hardware what to do. It includes system software and application software.
  • CPU: The brain of the computer that performs computations and controls other parts.
  • Input Devices: Devices that allow users to input data (e.g., keyboard, mouse).
  • Output Devices: Devices that show results (e.g., monitor, printer).
  • Operating System: System software that manages hardware and software resources (e.g., Windows, Linux).
  • Memory (RAM & ROM): RAM is volatile memory for temporary storage; ROM is permanent and stores firmware.

Detailed Notes

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